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CEO Punches Ticket and Avoids Sanctions Based on Receiving Confidential Documents

by | Jun 29, 2023 |

Addressing protective order violations, the US Court of Appeals for the Fifth Circuit largely vacated a district court’s sanctions order. The Court explained that sanctions must comply with due process, barring parties from future litigation should be treated as a “death-penalty” sanction and damages calculations require specific factfinding. CEATS, Inc. v. TicketNetwork, Inc., Case No. 21-40705 (5th Cir. June 19, 2023) (Elrod, Haynes, Willett, JJ.)

To settle a long-running dispute, TicketNetwork licensed several patents from CEATS, a non-practicing patent assertion entity. Several years into the license, all of the licensed patents were invalidated in an unrelated litigation. TicketNetwork promptly stopped paying royalties and filed suit seeking a declaration that the license agreement was unenforceable. CEATS counterclaimed for breach of contract.

During discovery, CEATS requested TicketNetwork’s list of affiliates, which TicketNetwork refused to produce, citing its highly confidential nature. After two discovery hearings, the district court ordered TicketNetwork to produce the affiliate list but specifically prohibited CEATS from using the list for any purpose other than use in the present litigation.

At trial, a jury found that TicketNetwork breached the license, and the district court awarded attorneys’ fees and costs to CEATS. After the jury verdict, CEATS CEO Milford Skane asked his litigation consultants for a “non-confidential” list of TicketNetwork’s affiliates. The consultants gave Skane the confidential list, which was promptly used in settlement negotiations with TicketNetwork. TicketNetwork filed for sanctions, requesting damages from CEATS and an injunction preventing CEATS from suing or seeking licenses from the listed affiliates.

The district court ordered an investigation and, after two years of inquiry and an all-day evidentiary hearing, found that Skane, the consultants and CEATS all violated the protective order and were jointly and severally liable to TicketNetwork. As sanctions, the district court awarded $500,000 in attorneys’ fees (using a billing rate nearly double the one it used when calculating CEATS’s fees) and barred Skane, the consultants and CEATS from suing or seeking licenses from any of TicketNetwork’s affiliates.

The sanctioned parties appealed and argued:

  • The district court violated due process by finding Skane and the consultants personally liable without giving them notice or opportunity to respond.
  • The district court erred by barring the parties without a finding of bad faith.
  • The district court’s damages calculation was unsupported.

The Fifth Circuit began by addressing the sanctions against Skane and the litigation consultants. The Court explained that sanctions require due process, which includes both fair notice and the opportunity to defend against the claim. The Court observed that the first time Skane and the consultants were made aware that they could be sanctioned was in the sanctions order itself—and their only opportunity to defend themselves took place after that order. Given the lack of any advance notice, the Fifth Circuit concluded that due process had not been satisfied and vacated the monetary sanctions against Skane and the consultants.

The Fifth Circuit also vacated the bar preventing Skane, the consultants and CEATS from suing or seeking licenses from any of the affiliates. Core [...]

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First Rule of the PTAB? Play by the Rules

by | Jun 22, 2023 |

The US Court of Appeals for the Federal Circuit affirmed two Patent Trial & Appeal Board decisions holding the challenged claims unpatentable as obvious, even though the Board declined to consider evidence of antedating and found that the claims lacked written description support. Parus Holdings, Inc. v. Google LLC, Case Nos. 22-1269; -1270 (Fed. Cir. June 12, 2023) (Lourie, Bryson, Reyna, JJ.)

Parus Holdings owns two patents related to an interactive voice system to request information from a voice web browser. Google (among others) petitioned for inter partes review (IPR) of the patents.

During the IPR proceedings, the Board found that a publication (Kovatch) was prior art to the challenged patents. In reaching that decision, the Board declined to consider Parus’s arguments and evidence of an earlier conception and reduction to practice because they were only presented via incorporation by reference in violation of 37 C.F.R. § 42.6(a)(3). The Board ruled that Parus failed to meet its burden of production on antedating.

The Board also found that the publication of the application to which Parus’s challenged patents claimed priority (Kurganov-262) was prior art because the common specification failed to provide written description support for the challenged claims. Parus appealed the Board’s decision, raising two main arguments.

First, Parus contended that the Board erred when it declined to consider Parus’s arguments and evidence on antedating. Parus argued that § 42.6(a)(3)’s prohibition on incorporation by reference did not warrant the Board’s decision because Parus, as patent owner, need not have submitted a response at all. Parus also argued that the Federal Circuit’s 2017 decision in Aqua Products mandates that the Board consider all record evidence, regardless of the manner of presentation. The Federal Circuit rejected Parus’s arguments in turn.

Regarding Parus’s violation of the incorporation by reference rule, the Federal Circuit explained that Parus had assumed an affirmative burden of production when it chose to submit a response to antedate Kovatch. Along with that burden came other responsibilities, such as complying with the US Patent & Trademark Office’s (PTO) rules and regulations, including § 42.6(a)(3). The Court further explained that this burden of production could not be met without some combination of citing evidence with specificity and explaining the significance of the cited material. Parus did neither.

The Federal Circuit also rejected Parus’s argument that the Board is required by law to review all evidence in the record. The Court clarified that, while its Aqua Products holding requires the Board to decide all issues properly before it, nothing in Aqua Products requires the Board to review evidence or issues not introduced or introduced in violation of the Board’s rules. As the Court noted, “[t]he burden of production cannot be met simply by throwing mountains of evidence at the Board without explanation or identification of the relevant portions of that evidence. One cannot reasonably expect the Board to sift through hundreds of documents, thousands of pages, to find the relevant facts.”

Parus also argued that the Board exceeded its statutory authority under 35 U.S.C. [...]

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Under High Pressure: New Mechanism of Action Can’t Save Drug Administration Claims

by | Jun 22, 2023 |

The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board ruling that method claims reciting a mechanism of action triggered by the co-administration of two known antihypertensive agents were obvious over the cited prior art. In re Couvaras, Case No. 22-1489 (Fed. Cir. June 14, 2023) (Lourie, Dyk, Stoll, JJ.)

This case arose out of applicant John Couvaras’s prosecution of patent claims reciting a method of increasing prostacyclin release in the systemic blood vessels to improve vasodilation in a human with essential hypertension by co-administering two therapeutic agents. During prosecution, Couvaras conceded that the two claimed therapeutic agents had been known as essential hypertension treatments for many decades. The examiner agreed, citing 10 references as confirmation. The examiner further found that the physiological results of co-administering the two therapeutic agents were not patentable because they naturally flowed from the claimed administration of the known antihypertensive agents.

Couvaras appealed to the Board, arguing that the increased prostacyclin release was unexpected and that objective indicia overcame any existing prima facie case of obviousness. The Board disagreed, ruling that the increased prostacyclin release was inherent in the obvious administration of the two known antihypertensive agents and that no evidence existed to support a finding of any objective indicia. Couvaras appealed.

Couvaras raised three arguments on appeal:

  1. The Board erred in affirming that a skilled artisan would have had motivation to combine the art.
  2. The claimed mechanism of action was unexpected, and the Board erred in discounting its patentable weight by deeming it inherent in the claimed method.
  3. The Board erred in weighing objective indicia of non-obviousness.

With respect to motivation to combine, the Federal Circuit agreed with the Board that the art supplied sufficient motivation to combine because the claimed therapeutic agents were known for decades to treat hypertension, finding the Board’s conclusion supported by substantial evidence. The Court found that Couvaras had forfeited a related argument for no reasonable expectation of success by failing to first raise that challenge to the Board.

The Federal Circuit also rejected Couvaras’s argument that the claimed mechanism of action was unexpected and therefore entitled to patentable weight. Couvaras argued that the Board downgraded the patentable weight of limitations drawn to the antihypertensive agents’ mechanism of action by deeming them to be merely inherent. According to Couvaras, even if the recited mechanism of action was inherent in the claimed administration of the two agents, that mechanism was unexpected because the increased prostacyclin release was unexpected and could not be dismissed as having no patentable weight due to inherency.

The Federal Circuit disagreed, explaining that Couvaras was attempting to claim a mechanism of action that naturally flows from the co-administration of two known antihypertensive agents and that “[n]ewly discovered results of known processes directed to the same purpose are not patentable because such results are inherent.” The Court allowed that while mechanisms of action may not always meet the most rigid standards for inherency, “[r]eciting the mechanism for known compounds [...]

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Inventorship Hosed Clean: Contribution, Corroboration and Collaboration Prove Joint Invention

by | Jun 22, 2023 |

The US Court of Appeals for the Federal Circuit affirmed a decision to correct inventorship, finding that the alleged joint inventor’s contribution to a claimed invention was significant and adequately corroborated by evidence. Blue Gentian, LLC v. Tristar Products, Inc., Case Nos. 21-2316; -2317 (Fed. Cir. June 9, 2023) (Prost, Chen, Stark, JJ.)

Blue Gentian owns utility and design patents directed to an expandable hose. Prior to filing the first patent application, Michael Berardi (the sole inventor of the asserted patents and Blue Gentian’s principal) met with non-party Gary Ragner to discuss investing in Ragner’s expandable hose. Berardi had no experience designing hoses at the time of the meeting. Berardi testified that he came up with the idea of his hose after watching a demonstration video of Ragner’s hose but before the meeting. At the meeting, Ragner disclosed a prototype and documents relating to his hose and discussed the inner components of the hose. Berardi built his first prototype a day after the meeting and filed his first patent application three months later. Blue Gentian subsequently filed suit against Tristar for infringement of its expandable hose patents. Tristar counterclaimed to correct inventorship of the patents, alleging that Ragner should have been named a co-inventor.

A court may order a correction of inventorship when it determines that an inventor has been erroneously omitted from a patent. The inventors listed on an issued patent, however, are presumed to be the only true inventors. Thus, a party must prove incorrect inventorship by clear and convincing evidence. An alleged joint inventor’s testimony standing alone is insufficient to establish inventorship by clear and convincing evidence; the testimony must be corroborated by evidence. A joint inventor must contribute significantly to the invention’s conception or reduction to practice, and the contribution must involve some collaboration with the other inventor.

The district court, after an evidentiary hearing, entered judgment on the inventorship counterclaim in Tristar’s favor and ordered correction of the patents under 35 U.S.C. § 256. Blue Gentian appealed.

The Federal Circuit found that Ragner conveyed three key elements of the hose to Berardi at the meeting and that these elements were a significant contribution to the conception of at least one claim of each asserted patent. The Court noted that these were the very elements Blue Gentian used to distinguish the invention from the prior art, establishing the element’s significance. The Court also found that Ragner’s testimony about conveying the three elements to Berardi at the meeting was adequately corroborated by both physical and circumstantial evidence. The evidence showed the similarity between Ragner’s disclosed prototype and Berardi’s first prototype, and documentary evidence showed Ragner’s familiarity with the three elements before the meeting. Finally, the Court found sufficient collaboration between Berardi and Ragner based on the information exchanged at the meeting, including Ragner’s prototype, confidential documents and verbal explanations about alternative hose designs.

The Federal Circuit dismissed Blue Gentian’s argument that claim construction was needed before analyzing Ragner’s contribution because Blue Gentian did not identify a dispute [...]

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The Best Option Is Obviously Not the Only Option

by | Jun 22, 2023 |

Following a jury verdict finding infringement of two patents and awarding $2.2 billion, the Patent Trial & Appeal Board issued a final written decision finding all claims in one of the asserted patents invalid. The Board explained that an asserted prior art combination only needs to be a suitable option, not the best option. Patent Quality Assurance, LLC v. VLSI Tech. LLC, Case No. IPR2021-01229 (June 13, 2023) (Giannetti, McNamara, Melvin, APJs).

In March 2021, a jury found that Intel infringed two patents owned by VLSI. On July 7, 2021, Patent Quality Assurance filed an inter partes review petition against all claims of one of the patents Intel was found to infringe. The Board instituted review. After institution, Intel filed an identical petition and motion for joinder, both of which were granted.

The challenged patent is directed to a method of determining the minimum operating voltage for integrated-circuit memory, storing the value of that voltage in nonvolatile memory, and using the value to determine when an alternative power-supply voltage may be switched to the memory to ensure that the minimum operating voltage is met. Intel challenged the claims of the patent based primarily on a combination of three prior art references.

VLSI raised numerous arguments for why the combination of prior art references did not teach the claimed invention. VLSI argued that a skilled artisan would not have had reason to regulate the power supply voltage of one reference with the voltage regulator of another. VLSI asserted that there would have been no need to use the switching mechanism if voltage regulation was available from the outset. The Board disagreed and quoted the US Court of Appeals for the Federal Circuit’s 2022 decision in Intel v. Qualcomm, which stated that “a petitioner is required to show only that there is something in the prior art as a whole to suggest the desirability of making the combination, not whether there is something in the prior art as a whole to suggest that the combination is the most desirable combination available.”

The Board reiterated this theme in response to another of VLSI’s arguments. VLSI contended that a person of skill in the art would not have combined the prior art disclosure of a system for determining minimum operating voltages and storing them in nonvolatile memory with a reference that uses SRAM, a type of volatile memory commonly used as an alternative to nonvolatile memory. The Board again noted that “there is no requirement that an asserted combination is the best option, only that it be a suitable option.”

Given the jury’s verdict and damages award in the district court case, VLSI also argued that the jury’s verdict showed commercial success and was objective indicia of nonobviousness. As part of its analysis, the Board reiterated that the nexus between the alleged commercial success and the asserted patent claims must be both embodied by the commercial product and coextensive with them. The Board went on to find that “the record before [the Board] does [...]

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Absent Nexus Secondary Considerations Come in Second

by and | Jun 15, 2023 |

Addressing the nexus between a secondary consideration and the claimed invention in assessing obviousness, the US Court of Appeals for the Federal Circuit reversed a Patent Trial & Appeal Board finding of nonobviousness because the Board erred in its nexus analysis regarding secondary considerations. Yita LLC v. MacNeil IP LLC, Case Nos. 22-1373; -1374 (Fed. Cir. June 6, 2023) (Taranto, Chen, Stoll, JJ.)

Yita petitioned for inter partes review (IPR) of all claims of two patents. The patents share a common specification and cover vehicle floor trays that are theraformed from a polymer sheet of substantially uniform thickness. These trays (illustrated below) were designed to closely conform to the walls of the vehicle foot well so that the trays would stay in place once installed.

The Board found that the claims of one of the patents were not obvious even though an artisan would have been motivated to combine the prior art asserted (which disclosed the “close conformance” limitation) and would have had a reasonable expectation of success because the evidence of secondary considerations was overpowering and included a nexus between the evidence of success and the patented invention. The Board also found that the claims of the other patent were not obvious because the “1/8 inch limitation” regarding the thickness of the foot well was not disclosed in the prior art. The Board declined to consider Yita’s argument, which was raised for the first time in its reply brief. Yita appealed.

Yita argued that the Board committed a legal error in its analysis of the secondary consideration evidence for the first patent and abused its discretion by not considering the argument Yita raised in its reply brief regarding the other patent.

On the secondary considerations issue, the Federal Circuit explained that the Board erred in finding a nexus between the secondary consideration evidence of success and the claimed invention because the Board exclusively related to a feature that was well-known in the prior art (i.e., the close conformance between the tray and the vehicle floor). The Court explained that where the prior art teaches a well-known feature and an artisan would have been motivated to combine such prior art with an expectation of success, any secondary consideration that is exclusively related to the well-known feature will not rescue the claim from obviousness. The Court noted that while secondary considerations can be linked to an individual element of the claimed invention or to an inventive combination of elements, here the Board relied on secondary consideration evidence that was related entirely to the already well-known close conformance of the tray and vehicle floor.

The Federal Circuit next addressed Yita’s argument that the Board should have considered an argument raised in Yita’s reply brief regarding the 1/8-inch limitation. Yita failed to raise the argument that it would have been obvious to modify a prior art reference to arrive at the “1/8 inch limitation” [...]

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District Court Finding Doesn’t Preclude PTAB Proceeding

by | Jun 15, 2023 | ,

The Patent Trial & Appeal Board refused to terminate an inter partes review (IPR) proceeding, finding that collateral estoppel and claim preclusion do not apply to previous findings from a district court proceeding. Patent Quality Assurance, LLC v. VLSI Technology LLC, IPR2021-01229, Paper No. 128 (PTAB June 3, 2023) (Melvin, Giannetti, McNamara, APJs).

Patent Quality Assurance filed a petition for IPR on July 7, 2021, against a patent owned by VLSI. The Board granted institution. The Board later instituted on a substantively identical petition filed by Intel and granted Intel’s motion for joinder to add Intel to the Patent Quality Assurance IPR proceeding. Prior to the July 7, 2021, petition, litigation between VLSI and Intel resulted in a jury verdict that Intel infringed certain claims of the challenged patent. Invalidity was not presented to the jury. On May 10, 2022, the district court entered final judgment, including a finding that Intel had not proven invalidity. Based on the district court’s judgment, VLSI asserted that claim preclusion barred Intel from challenging validity of the asserted patent in IPR and sought termination of the IPR as to Intel.

VLSI argued that the elements of claim preclusion were met because both VLSI and Intel were parties to both cases, the district court entered a final judgment for infringement and no finding of invalidity, and the effect of Intel’s IPR was to collaterally attack the final judgment in the first case. Intel responded, arguing that claim preclusion does not apply to IPRs from the district court under the America Invents Act (AIA).

The Board agreed with Intel that estoppel did not apply. Intel argued that if Congress had intended for IPRs to be precluded by claims in a parallel district court, it would have identified that as one of the estoppel circumstances in the AIA. VLSI argued that the Supreme Court’s 1991 decision in Astoria Federal sav. & Loan Ass’n v. Solimino applies only when an agency decision precludes a later court decision and, therefore, common-law claim preclusion would apply to the IPR proceeding barring a plain statement from Congress showing intent to overcome preclusion.

The Board disagreed, noting that the cited case law related to statutes where a later statute superseded the earlier one and required a clear and manifest intent to repeal the earlier statute. The Board found that there was no express intent to repeal the earlier statute regarding estoppel, and the jurisprudence constantly counsels against repeal “by implication.” The Board also crucially noted that there was no statutory conflict between the earlier and later statutes, and the question, therefore, was whether (under Astoria) the AIA showed congressional intent that common-law claim preclusion should apply to IPRs.

Reading 35 U.S.C. § 315(e), the codification of the AIA’s estoppel provision, the Board noted that the statute clearly imposes estoppel on future agency and district proceedings but says nothing about applying adjudications in district court proceedings at the Board. As the Board explained, there would be no reason for § 315(e) to spell [...]

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Obviously Prima Facie Case Overcome by Secondary Considerations

by | Jun 15, 2023 |

The US Court of Appeals for the Federal Circuit affirmed the Patent Trial & Appeal Board, holding that the Board did not err in finding certain challenged claims nonobvious and not unpatentable based on a showing of several objective criteria of nonobviousness and a nexus of the evidence to a commercial product embodying the claimed invention. Medtronic, Inc. v. Teleflex Innovations S.A.R.L., Case No. 21-2357 (Fed. Cir. June 05, 2023) (Moore, C.J.; Lourie, Dyk, JJ.) and Medtronic, Inc. v. Teleflex Innovations S.A.R.L., Case No. 21-2359 (Fed. Cir. June 05, 2023) (Moore, C.J.; Lourie, Dyk, JJ.)

Teleflex developed and patented a novel catheter-based stenosis intervention system that successfully mitigated long-standing risks intrinsic to existing catheter-based intervention systems, in particular damage to the coronary artery from guide catheter dislodgement or a catheter’s distal tip (i.e., the end of the catheter farthest from the insertion site). The preferred embodiments incorporated into Teleflex’s extremely successful GuideLiner products comprised a proximal substantially rigid portion (yellow), a reinforced portion (blue) and a distal flexible tip (pink), as illustrated below.

The catheters were sized so they could be inserted through standard guide catheters and thus were coined guide extension catheters. This innovative nesting feature increased guide catheter backup support while the guide extension catheter’s soft distal end was less likely to cause tissue damage once deeply inserted into patients. Teleflex’s guide extension catheters also were optimized for receiving interventional cardiological devices. This optimized function was a combination of the catheter’s coaxial lumen, that lumen’s diameter being no more than one French (i.e., 1/3 mm) less than the diameter of the guide catheter, and a proximal side opening that featured a double incline design like that illustrated above.

Teleflex’s GuideLiner was introduced in 2009 and enjoyed “undisputed commercial success and industry praise.” In 2019, Medtronic introduced its competing guide extension catheter (Telescope) and filed six inter partes review (IPR) petitions against Teleflex’s extension guide catheter family. Three of Medtronic’s petitions asserted that the challenged claims in three of Teleflex’s patents were obvious over the evacuation sheath assembly with a distal side opening used to aspirate embolic material while occluding blood flow using sealing balloons disclosed in a prior art reference (Ressemann). The other three petitions challenged claims of the other Teleflex patents as being obvious over a support catheter for delivering angioplasty balloons disclosed in a prior art reference (Kontos).

Medtronic specifically asserted that the following three elements of Teleflex’s claimed catheters were obvious:

  1. A proximal side opening. Medtronic argued that it would have been obvious to replace the proximal funnel structure of Kontos’s support catheter with the distal side opening of Ressemann’s evacuation sheath assembly.
  2. A catheter diameter that is no more than one French less than a corresponding guide catheter. Medtronic argued that in view of prior art mother-and-child dual catheter systems in which the child catheter’s diameter is no more [...]

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Well Runs Dry: Summary Judgment Denial Supports Non-Exceptional Case Finding

by | Jun 1, 2023 |

The US Court of Appeals for the Federal Circuit affirmed a district court’s denial of attorneys’ fees, explaining that when a district court denies summary judgment and allows a plaintiff’s case to proceed, the district court effectively determines that the position of the party opposing summary judgment is not objectively baseless. OneSubsea IP UK Limited v. FMC Techs, Inc., Case No. 22-1099 (Fed. Cir. May 23, 2023) (Moore, Clevenger, Dyk, JJ.)

OneSubsea and FMC compete in the subsea oil and gas exploration and extraction industry. In March 2015, OneSubsea filed a lawsuit against FMC alleging infringement of 95 claims across 10 OneSubsea patents. After the district court issued its claim construction ruling, FMC moved for summary judgment of noninfringement. OneSubsea opposed. While the summary judgment motion was pending, the Patent Trial & Appeal Board instituted inter partes review (IPR) proceedings on a subset of the asserted patents. FMC argued that while a stay of district court proceedings would be appropriate, it was unnecessary in light of its pending summary judgment motion. In August 2016, the district court denied summary judgment and stayed the case.

The case remained stayed for three years, during which time the Board invalidated 76 claims. In 2019, the district court lifted the stay. At a pre-trial hearing in 2020 discussing whether additional discovery was needed to address summary judgment, FMC doubted the need for more discovery and pointed to the 3,200 record pages illustrating differences between the designs of the accused device and the patented devices. In response, the district court stated, “And you really think I’m going to be able to grant summary judgment on that?” After the hearing, FMC renewed its summary judgment motion, which OneSubsea opposed. In reply, FMC moved to exclude the report of OneSubsea’s expert because he applied the wrong claim construction. Ultimately, the district court granted FMC’s motion to exclude and its motion for summary judgment.

In 2021, FMC moved for attorneys’ fees based on OneSubsea’s “substantively weak infringement claims” after the claim construction order was issued and “litigation misconduct.” After briefing was complete, the district court announced that the case had been reassigned to another judge following the retirement of the original assigned judge. The new judge rejected FMC’s view that OneSubsea’s case was objectively baseless and further rejected FMC’s claims of litigation misconduct. FMC appealed.

As a threshold matter, FMC argued that the Federal Circuit should apply de novo review instead of an abuse-of-discretion standard because the new judge only briefly “lived with the case” and should be disqualified from exercising discretion in deciding FMC’s attorneys’ fees motion. The Court rejected FMC’s invitation to change the standard of review, citing the substantial body of law in which appellate courts have consistently reviewed successor judges’ decisions on discretionary issues for abuse of discretion.

Turning to the merits, the Federal Circuit found that FMC’s exceptional case argument lacked merit. The Court explained that the argument disregarded the district court’s observation that FMC’s demand for a prompt favorable noninfringement judgment based [...]

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Heart-to-Heart on Reduction to Practice: When It Comes to Testing, How Much Is Enough?

by | Jun 1, 2023 |

The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board decision that the patent owner successfully demonstrated that the claimed heart catheter invention was conceived and reduced to practice prior to the effective date of the reference, by record evidence of adequate testing to demonstrate that the invention would work for its intended purpose. Medtronic, Inc. v. Teleflex Innovations S.Á.R.L., Case Nos. 21-2356; -2358; -2361; -2363; -2365 (Fed. Cir. May 24, 2023) (Moore, C.J.; Lourie, J.) (Dyk, J., dissenting).

Teleflex Innovations owns five patents directed to guide extension catheters that use a tapered inner catheter that runs over a standard coronary guidewire to reduce the likelihood that a guide catheter will dislodge from the coronary artery’s opening. All of the patents are related and share a common specification. Around the time of the challenged patents’ priority date, the applicant was working to develop two commercial variants of similar technology: the “rapid exchange” (or “RX”) version of the GuideLiner product, which Teleflex claims practices the challenged patents, and an “over-the-wire” (or “OTW”) variant, which does not practice the challenged patents.

Medtronic petitioned for inter partes review (IPR), challenging all five patents on the basis that they were predated by a patent to Itou. During the IPR proceedings, Teleflex claimed that conception and reduction to practice occurred prior to Itou’s priority date and submitted several declarations and exhibits such as lab notebooks, internal company memoranda, presentations, invoices, sales orders, photographs, engineering drawings and documents from outside patent counsel in support of its contentions. Ultimately, the Board found that Itou did not constitute prior art and therefore Medtronic had failed to demonstrate that the challenged claims were unpatentable. Medtronic appealed.

On appeal, Medtronic did not challenge conception but argued that the Board’s findings on actual reduction to practice and reasonable diligence toward constructive reduction to practice should be reversed. To establish an actual reduction to practice, the patent owner must show that the inventors constructed an embodiment that met all the limitations of the claimed invention and determined that the invention would work for its intended purpose. Medtronic’s arguments were based on the grounds that the Board erred in three ways:

  1. Incorrectly identifying the intended purpose of the claimed invention
  2. Not requiring comparative testing to demonstrate that the invention worked for that purpose
  3. Relying solely on uncorroborated inventor testimony.

On the first issue, Medtronic argued that the Board incorrectly found an over-broad intended purpose of the claimed invention by relying too heavily on extrinsic evidence. The Federal Circuit acknowledged that while “the patents themselves are the most important” evidence, “it is appropriate to consider extrinsic evidence, particularly when it does not contradict the patents themselves.” The Court went on to conclude that the intended purpose here was broader than the narrow purpose argued by Medtronic (relating to difficult occlusions)—“[t]he very title of the patents themselves, ‘Coaxial Guide Catheter for Interventional Cardiology Procedures,’ describes the purpose of the claimed inventions, and it is undisputed that the [...]

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