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So You Wanna Play with Copyright? “Joyful Noise” Ostinato Isn’t Original Expression

by | Mar 24, 2022 |

The US Court of Appeals for the Ninth Circuit affirmed a district court’s order vacating a jury award of damages for copyright infringement and granting judgment as a matter of law, explaining that the musical work alleged to have been copied did not qualify as an original work of authorship but consisted only of “commonplace musical elements.” Marcus Gray PKA Flame et al. v. Katheryn Elizabeth Hudson PKA Katy Perry et al., Case No. 20-55401 (9th Cir. Mar. 10, 2022) (Clifton, Smith, Watford, JJ.)

Key Definitions:

  • A musical scale is a sequence of musical notes or tones by pitch.
  • A subset of seven notes is called the minor scale and can be referred to with alphabetic names (A, B, C, etc.) or scale degrees (1, 2, 3, etc.).
  • An ostinato is a repeating musical figure (for example, 3-3-3-3-2-2).

In 2007, Marcus Gray (Flame) purchased an ostinato and used it in the song “Joyful Noise.” The song was released in 2008. While “Joyful Noise” did not achieve significant commercial success or airtime, it received millions of views online. In 2013, American singer-songwriter Katy Perry created “Dark Horse,” which was a hit, resulting in her performance at the Super Bowl halftime show in 2015.

The “Joyful Noise” ostinato consists of notes, represented as 3-3-3-3-2-2-2-1 and 3-3-3-3-2-2-2-6, whereas Dark Horse’s ostinato contains 3-3-3-3-2-2-1-5. Both have a uniform rhythm and equal note duration in time.

Plaintiffs sued Perry and her co-defendants for copyright infringement. Plaintiffs presented circumstantial evidence that the defendants had a reasonable opportunity to access “Joyful Noise” and that the ostinatos in both songs were substantially similar. Plaintiffs did not present direct evidence that Perry and the others had copied elements of the song, instead relying on testimony from their expert musicologist, Dr. Todd Decker.

Decker testified that the ostinatos were similar in many aspects, but he also testified that there was no single element that caused him to believe the ostinatos at issue were “substantially similar” when viewed “in isolation.” The jury also heard testimony from Perry’s expert, who disagreed altogether that the ostinatos were substantially similar.

The jury found that the defendants had a reasonable opportunity to hear “Joyful Noise” before composing “Dark Horse,” that the two songs contained substantially similar copyrightable expression and that “Dark Horse” used protected material from “Joyful Noise.” The jury found the defendants liable for copyright infringement and awarded $2.8 million in damages. The district court vacated the award and granted judgment as a matter of law to defendants, concluding that the evidence at trial was legally insufficient to show that the “Joyful Noise” ostinato was a copyrightable original expression. The plaintiffs appealed.

The Ninth Circuit explained that because the plaintiffs did not present any direct evidence that the defendants copied the “Joyful Noise” ostinato, they were required to show that the defendants had access to the work and that the ostinatos were substantially similar.

The Ninth Circuit began with its analysis [...]

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California, I’m Coming Home: Transfer to Venue Where Products Were Designed Is Appropriate

by | Mar 10, 2022 |

The US Court of Appeals for the Federal Circuit denied a patent owner’s petition for writ of mandamus, finding that the district court properly transferred a case from the Eastern District of Virginia to the Northern District of California because the center of the alleged infringing activities occurred in California. In re: SunStone Information Defense, Inc., Case No. 2022-121 (Fed. Cir. Feb. 11, 2022) (Moore, Dyk, Stoll, JJ). (non-precedential).

SunStone filed a patent infringement suit against F5 Networks and one of its customers in the Eastern District of Virginia. F5 Networks moved to transfer the case to the Northern District of California pursuant to 28 U.S.C. § 1404(a), arguing that at the time of filing, SunStone was headquartered in Northern California, and the F5 Networks subsidiary that designed and developed the accused products was also located in the area. F5 Networks also noted that essentially all of the relevant documents and knowledgeable employees were in Northern California.

The district court granted F5 Networks’ motion, explaining that F5 Networks satisfied its burden of proving that transfer was warranted based on convenience of the parties and witnesses and because California was the “center of the alleged infringing activities.” The district court also noted that neither party disputed that the action “might have been brought” in the Northern District of California. SunStone petitioned for writ of mandamus.

The Federal Circuit applied the law of the regional circuit (the Fourth Circuit), which requires finding a clear abuse of discretion in order to overturn a district court’s transfer decision. The Court found that SunStone failed to meet this “stringent standard.” The Court also found that SunStone’s choice of forum was not entitled to significant weight because it was not SunStone’s home forum and had no specific connection to the infringement claims. The Court therefore denied SunStone’s petition.

Practice Note: This is another decision in a long line of recent Federal Circuit rulings relating to venue, which are summarized in an article related to a string of transfer denials in the Western District of Texas and our 2022 IP Outlook Report: The Developments Shaping Patent Law.



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Alleged Trademark Infringer Remains Hog-Tied after Appeal

by | Feb 3, 2022 |

The US Court of Appeals for the Tenth Circuit dismissed an appeal of a district court order denying a stay of a federal action for lack of jurisdiction under 28 U.S.C. § 1291 and reversed in part the district court’s grant of a preliminary injunction. The Trial Lawyers College v. Gerry Spence Trial Lawyers College at Thunderhead Ranch, Case No. 20-8038 (10th Cir. Jan. 27, 2022) (Bacharach, Briscoe, Murphy, JJ.).

The dispute between the parties arose out of a program called The Trial Lawyers College at Thunderhead Ranch in Wyoming. The College’s board of directors split into two factions known as the “Spence Group” and the “Sloan Group.” After the split, the two groups sued each other. The Spence Group sued in state court for dissolution of the College and a declaratory judgment regarding control of the board of directors. The Sloan Group sued in federal court claiming trademark infringement under the Lanham Act.

Both groups sought relief in the federal case. The Spence Group filed a motion to stay the federal court proceedings in light of the state court proceedings, and the Sloan Group requested a preliminary injunction. The district court denied the Spence Group’s stay and granted the Sloan Group’s request for a preliminary injunction. The Spence Group appealed both rulings.

The Tenth Circuit found that it lacked jurisdiction to review the district court’s stay denial. First, the state court resolved the dispute concerning board control, rendering part of the requested stay moot. Second, the Court determined that it lacked jurisdiction over the remaining motion for stay because it was not a final order. The Court explained that it needed to decide the appealability of the ruling based on the category of order rather than the particular facts of the case. The Court found that there was no unsettled issue of unique urgency or importance that warranted the Court exercising jurisdiction over the denial of the stay. Specifically, the Court explained that piecemeal litigation was unlikely because the state court already decided the issue of board control, and the Spence Group did not identify an unsettled issue of unique urgency.

The Tenth Circuit did exercise jurisdiction over the district court’s grant of a preliminary injunction. The Spence Group challenged the district court’s finding of irreparable harm, the order to remove sculptures bearing the College’s name, restrictions on what the Spence Group could say and the consideration of evidence presented after the hearing ended. The Court reviewed the district court’s findings under an abuse-of-discretion standard. The Court found that the district court did not abuse its discretion by finding irreparable harm, considering evidence after the hearing and enjoining the Spence Group from using words associated with the College. The Court explained that the district court reasonably found irreparable harm based on the College’s efforts to protect its name, logo and trademarks, as well as evidence of likely confusion among customers of the College based on the Spence Group’s use of those trademarks. As for the sculptures, the Court found [...]

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Can’t Presume Personal Jurisdiction Exists When Challenged

by , and | Feb 3, 2022 |

The US Court of Appeals for the First Circuit affirmed a district court order dismissing a trademark infringement case for lack of personal jurisdiction, finding that if challenged, personal jurisdiction cannot be assumed into existence. Motus, LLC v. CarData Consultants, Inc., Case No. 21-1226 (1st Cir. Jan. 18, 2022) (Lynch, Selya, McConnell, JJ.)

Motus is a Delaware corporation headquartered in Boston, Massachusetts. CarData is a Canadian corporation with offices in Colorado, New York and Toronto. Both Motus and CarData offer tools for companies to manage employee expense reimbursement. Motus asserted a trademark over the phrase “corporate reimbursement services,” which was present in the meta title of CarData’s website. In November 2019, Motus asked CarData to remove the phrase from its website, and CarData did so within three days.

Motus nevertheless filed a federal lawsuit in the District of Massachusetts asserting Lanham Act claims for trademark infringement, trademark dilution and other state and federal causes of action. CarData moved to dismiss for lack of personal jurisdiction, among other grounds. The district court granted the motion to dismiss, finding that Motus failed to demonstrate either the existence of personal jurisdiction over CarData or that discovery into CarData’s jurisdictional claims were warranted. Motus appealed.

On appeal, the First Circuit reiterated that Motus bore the burden of demonstrating that the district court’s exercise of personal jurisdiction over CarData was proper, noting that although a plaintiff is not required to plead facts sufficient for personal jurisdiction, “it must—if challenged—ensure that the record contains such facts.” To demonstrate that personal jurisdiction over CarData was proper, Motus had to show that CarData had sufficient “minimum contacts” with the forum that were sufficiently related to the matter at issue and evidenced a “purposeful availment of the privilege of conducting business in the forum,” and also had to show the reasonableness of the exercise of personal jurisdiction in that forum. Motus argued that CarData had sufficient “minimum contacts” with Massachusetts for personal jurisdiction to lie there, primarily because CarData had offices elsewhere in the United States and because CarData maintained a website that was available to serve Massachusetts residents.

Given that Motus’s arguments for personal jurisdiction related primarily to the publicly available nature of CarData’s website to residents of Massachusetts, the First Circuit explained that “[i]n website cases we have recognized that the ‘purposeful availment’ element often proves dispositive.” Here, the Court found nothing in the record suggesting that CarData specifically targeted or did business with Massachusetts residents. The Court rejected Motus’s citation to informational content on the website because it was not specific enough to evidence intentional solicitation of business from any particular state. Nor was there evidence of substantial CarData revenue from Massachusetts. Thus, the Court found that there was no “purposeful availment.”

Finally, the First Circuit affirmed the district court’s denial of jurisdictional discovery into CarData’s “minimum contacts” with Massachusetts. The Court found that although Motus mentioned the availability of jurisdictional discovery in a single sentence in a footnote to its opposition to CarData’s motion to [...]

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Nailed It: Expert Must at Least Meet Ordinary Skill Level to Testify from POSITA Perspective

by | Jan 27, 2022 |

Addressing a US International Trade Commission (ITC) decision finding a § 337 violation as to one patent but no violation as to four other patents, the US Court of Appeals for the Federal Circuit reiterated that a technical expert must at least meet the level of ordinary skill in the art of the asserted patents to testify from the perspective of a person of ordinary skill in the art (POSITA), whether for claim construction, validity or infringement. Kyocera Senco Indus. Tools Inc. v. ITC, Case Nos. 20-1046, -2050 (Fed. Cir. Jan. 21, 2022) (Moore, C.J.; Dyk, Cunningham, JJ.)

In 2017, Kyocera filed a complaint at the ITC seeking a § 337 investigation based on infringement allegations for six patents directed to battery-powered gas spring nail guns. The investigation was assigned to the Chief Administrative Law Judge (ALJ), who, in the context of a Markman order, adopted Koki Holdings America Ltd.’s uncontested level of skill in the art as including “experience in powered nailer design.” After claim construction, Kyocera dropped one patent from the investigation and went forward with infringement under the doctrine of equivalents as the sole basis for violation for four other patents.

Prior to the evidentiary hearing, Koki moved to exclude Kyocera’s expert’s testimony due to their admission during deposition that they did not have the experience in powered nailer design required by the adopted level of ordinary skill in the art. The Chief ALJ held that the Federal Circuit’s decision in AquaTex Indus. v. Techniche Sols. expressly required that Kyocera’s expert’s testimony be excluded as to infringement under the doctrine of equivalents but permitted the expert to testify as to literal infringement on one patent and on claim construction. After the evidentiary hearing, the Chief ALJ issued an initial determination that relied, in part, on Kyocera’s expert to find a particular element satisfied on the one remaining patent where literal infringement was asserted, but ultimately found no infringement due to other claim limitations. The Chief ALJ’s noninfringement decision as to the one remaining patent was then overturned on review by the full ITC, which found a § 337 violation and issued a limited exclusion order.

Kyocera appealed the Chief ALJ’s exclusion of its expert’s testimony on doctrine of equivalents, and Koki cross-appealed on the Chief ALJ’s decision to allow Kyocera’s expert to testify as to literal infringement and claim construction. The Federal Circuit reversed the ITC’s decision, holding that it was error to permit any infringement testimony from Kyocera’s expert and explaining that a witness must at least have ordinary skill in the art to offer testimony from the perspective of a skilled artisan for claim construction, validity or infringement, whether literal or under the doctrine of equivalents.

Alexander Ott was a member of Koki’s ITC trial team and the Federal Circuit appeal team in this case.



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Appeal Shuttered for Lack of Finality

by | Jan 27, 2022 |

The US Court of Appeals for the Eighth Circuit held that it lacked jurisdiction under 28 U.S.C. § 1291 and therefore dismissed an appeal of a district court decision staying a federal action pending state court litigation between the parties. Window World Int.’l, LLC et al. v. O’Toole et al., Case No. 21-1108 (8th Cir. Jan. 7, 2022) (Loken, Colloton, Benton, JJ.).

Window World International owns registered trademarks for the marketing of exterior remodeling products, such as custom-made vinyl windows. Window World distributes products through 200 independently owned and operated franchisees, including Window World of St. Louis, Inc. and Window World of Springfield-Peoria, Inc., companies co-owned by James T. Lomax III (collectively, the Lomax parties). Window World sublicenses its franchisees to use its trademarks.

In January 2015, the Lomax parties and other Window World franchisees sued Window World in the North Carolina Business Court. The Lomax parties alleged that Window World failed to make franchise disclosures required by federal and state law. They also asserted claims of fraud and breach of contract. In April 2019, the Lomax parties sent letters to Window World customers making several misrepresentations about Window World’s product warranty. Window World commenced action in federal court, asserting causes of action under the Lanham Act for false advertising, trademark infringement, unfair competition and dilution of a famous mark.

The Lomax parties moved to dismiss for failure to state a claim or stay the federal action pursuant to the Supreme Court’s 1976 decision in Colorado River Water Conservation Dist. v. US, which held that the interests of effective judicial administration may lead a federal court to reject taking jurisdiction in a case involving a concurrent state proceeding. Window World opposed the dismissal and stay requests. The district court dismissed several of Window World’s claims but ruled that it had a plausible trademark infringement and unfair competition claim and denied dismissal as to those claims. The district court also stayed the federal action pending determination of the scope of the claims regarding the protected marks in the North Carolina litigation. Window World appealed.

The Eighth Circuit found that the issued stay order was neither a final order under 28 U.S.C. § 1291 nor a collateral interlocutory order that may be appealed. As a result, the Court dismissed the appeal for lack of jurisdiction. In doing so, the Court explained that an order staying civil proceedings is interlocutory and not ordinarily a final decision for purposes of § 1291. However, if the stay effectively ends the litigation, then the order is final and jurisdiction under § 1291 is proper. Here, the Court concluded that the lower court’s stay was not a final order because the order contemplated further litigation in federal court. Additionally, the stay was not a final order merely because it had the practical effect of allowing a state court to be the first to rule on common issues. Therefore, the Court concluded that the stay order was not appealable as a final order and dismissed the appeal.



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Change the Look of the Room: Appeal Transferred to Federal Circuit

by | Jan 6, 2022 | ,

The US Court of Appeals for the Second Circuit transferred an appeal of a preliminary injunction enjoining alleged copyright and trademark infringement to the US Court of Appeals for the Federal Circuit because the operative complaint included six counts of patent infringement and thus arose under patent law. Hudson Furniture, Inc. et al. v. Lighting Design Wholesalers Inc., Case No. 20-3299 (2d Cir. Dec. 21, 2021) (Livingston, CJ; Kearse, Lee, JJ.) (per curiam).

Hudson filed a complaint against Lighting Design alleging patent, trademark and copyright infringement. The district court granted Hudson’s preliminary injunction and enjoined Lighting Design from alleged infringement of Hudson’s copyrights and trademarks. The district court also denied Lighting Design’s motion to dismiss for lack of personal jurisdiction and its motion for reconsideration permitting alternative service of process. Lighting Design appealed the rulings to the Second Circuit.

Hudson asked the Second Circuit to dismiss the appeal, arguing that the appeal arose from a complaint involving patent law claims and thus fell under the exclusive jurisdiction of the Federal Circuit. Under 28 U.S.C. §§ 1292 and 1295, the Federal Circuit has exclusive jurisdiction over interlocutory appeals involving any action that arises under any act of US Congress relating to patents. An action arises under patent law when a well-pleaded complaint establishes that (1) federal law creates the cause of action or (2) the plaintiff’s right to relief necessarily depends on resolution of a substantial question of federal patent law.

The Second Circuit agreed that exclusive jurisdiction rested with the Federal Circuit, explaining that the operative complaint included six counts of patent infringement, and the appeal concerned the district court’s ruling on a motion for injunctive relief involving patent law and non-patent law claims. The Court rejected Lighting Design’s argument that patent law did not constitute a substantial part of the overall success of the case since Hudson failed to secure preliminary injunctive related to the patent law claims. The Court explained that Lighting Design’s argument focused on only the second basis for Federal Circuit jurisdiction (whether the right to relief depends on a “substantial question” related to patent law). The Court found that even if it accepted Lighting Design’s argument, the fact that federal patent law created the cause of action was sufficient to establish Federal Circuit jurisdiction under the first basis of jurisdiction. While the Second Circuit agreed with Hudson, it declined to dismiss the appeal and instead opted to transfer the appeal to the Federal Circuit because the original appeal was timely filed in good faith and transferring the appeal was in the interest of justice.



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Rounding Error: Intrinsic Evidence Informs Plain and Ordinary Meaning

by | Dec 16, 2021 |

Vacating a stipulated infringement judgment based on an incorrect claim construction, the US Court of Appeals for the Federal Circuit explained that it is improper to isolate claim language from the intrinsic evidence when determining the plain and ordinary meaning of a disputed term. AstraZeneca AB v. Mylan Pharms. Inc., Case No. 21-1729 (Fed. Cir. Dec. 8, 2021) (Stoll, J.) (Taranto, J., dissenting).

AstraZeneca sued Mylan Pharmaceuticals for infringement of three patents listed in the US Food and Drug Administration’s (FDA) orange book covering the Symbicort® pressurized metered-dose inhaler for the treatment of asthma and COPD. 3M submitted an abbreviated new drug application (ANDA) to the FDA to manufacture and sell a generic version of the Symbicort® inhaler and certain interests to the ANDA were later transferred to Mylan. After receiving a Paragraph IV letter from Mylan, AstraZeneca filed an infringement suit.

Shortly before trial, the district court held a claim construction hearing to determine the meaning of “0.001%,” the claimed concentration of PVP (one of the active ingredients). The district court construed the term based on its “plain and ordinary meaning, that is, expressed with one significant digit.” Based on this definition, Mylan stipulated to infringement and the district court entered judgment. The district court held a bench trial on invalidity, ultimately determining that Mylan did not prove that the claims were invalid as obvious. Mylan appealed the stipulated judgment stemming from the claim construction determination and the judgment of no invalidity.

First, Mylan challenged the district court’s claim construction of “0.001%.” AstraZeneca argued that the district court improperly construed the term to encompass a range from 0.0005% to 0.0014%. Mylan contended that, in view of the specification and the prosecution history, the term was to be defined precisely at 0.001% with only “minor variations” allowed. The Federal Circuit agreed, finding that Mylan’s proposed construction was more properly aligned with the patent’s description as further informed by the prosecution history.

The Federal Circuit stated that the proper construction of 0.001% only allowed minor variations from 0.00095% to 0.00104%. There was no dispute that the term 0.001% would ordinarily encompass the range of 0.0005% to 0.0014%. AstraZeneca argued that this “ordinary meaning” would control absent lexicography or disclaimer. The Court disagreed, finding that it would improperly isolate the term from the claim language, specification and patent prosecution history. The Court explained that the “ordinary meaning” is not the ordinary meaning in the abstract but is instead the “meaning to the ordinary artisan after reading the entire patent,” and therefore the claims must be read in view of both the written description and the prosecution history. The Court’s rationale for narrower construction was based on the intrinsic record reflecting that the written description and prosecution history showed that very minor differences in PVP concentration would impact stability.

The Federal Circuit found that the written description explained that stability was one of the most important factors and that even very minor differences in PVP concentration could impact stability. The written description also [...]

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No More Bites at the Apple: Imminent and Non-Speculative Standing Still Required

by | Nov 18, 2021 |

The US Court of Appeals for the Federal Circuit reiterated that a patent challenger did not have Article III appellate standing to obtain review of a final Patent Trial & Appeal Board (PTAB) ruling because the underlying district court proceedings had been dismissed with prejudice after the parties reached a settlement and license agreement. Apple Inc. v. Qualcomm Inc., Case Nos. 20-1683; -1763; -1764; -1827 (Fed. Cir. Nov. 10, 2021) (Prost, J.) (Newman, J., dissenting).

This is the second dispute between Apple and Qualcomm to reach the Federal Circuit. In the first appeal (Apple I), the Court found that Apple did not have standing to maintain an appeal from the PTAB because the parties had entered into a settlement agreement.

As in the earlier case, here Qualcomm asserted patent infringement in district court, and Apple filed petitions for inter partes review of the patent claims that Qualcomm asserted Apple had infringed. The PTAB instituted on four petitions. While the inter partes review proceedings were pending, the parties settled the district court litigation, whereby Apple received a license in exchange for royalty payments to Qualcomm. The parties filed a joint motion to dismiss Qualcomm’s district court action with prejudice, which the district court granted. Ultimately, the PTAB found that Apple failed to prove that the challenged claims were unpatentable. Apple appealed.

As in Apple I, Qualcomm moved to dismiss the appeal for lack of standing. Apple responded by arguing that “[a]lthough Apple continues to disagree with [Apple I], in light of that decision and the . . . order denying Apple’s petition for rehearing en banc, Apple believes that the present appeal can be resolved on the briefs without the need for oral argument.” The parties filed a joint motion to vacate oral argument, but the Federal Circuit instead held a consolidated oral argument. Apple reiterated its disagreement with the Court’s ruling in Apple I but admitted that the operative facts in this appeal were “the same.” The Court found that other than the specific difference of the patents in issue themselves, the operative facts were the same and the alleged failure of proof as to certain patent claims (regarding whether the petitioner had established them to be unpatentable) were the same. The Court further found that any specific patent differences were irrelevant since the settlement and license agreements in each case covered the patents in issue in that case.

Apple raised a “nuance” not “specifically addressed” in Apple I, namely that Apple I “did not explain why the threat of liability, if Apple ceases the ongoing payment and the agreement is terminated, is not a sufficient injury to support standing.” The Federal Circuit was not convinced that this nuance merited a different treatment because:

  • The Court would need to sit en banc to change Apple I, and panels of the Court are bound by stare decisis.
  • Apple acknowledged that this “nuance” was at the core of its denied en banc petition in Apple I.

Accordingly, [...]

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Means-Plus-Function Claims: Don’t Forget the “Way”

by | Oct 21, 2021 |

The US Court of Appeals for the Federal Circuit affirmed a lower court’s findings of noninfringement, in part because the plaintiff had failed to prove the “way” element of the function-way-result test for a first means-plus-function claim, and because the specification lacked disclosure of a structure for the “way” to perform a second means-plus-function claim. Traxcell Techs., LLC v. Sprint Commc’ns Co., Case Nos. 20-1852, -1854 (Fed. Cir. Oct. 12, 2021) (Prost, J.); Traxcell Techs., LLC v. Nokia Sols. & Networks Oy, Case Nos. 20-1440, -1443 (Fed. Cir. Oct. 12, 2021) (Prost, J.)

Traxcell asserted several related patents against multiple defendants in parallel litigations. One of the patents related to self-optimizing network technology for making “corrective actions” to improve communications between a wireless device and a network (SON patent). The SON patent included two means-plus-function limitations. One of the other patents related to network-based navigation in which the network, as opposed to the wireless device, determined the device’s location (navigation patent).

Traxcell asserted the SON and navigation patents against Verizon and Sprint in one action and the SON patent against Nokia in another. In both cases, the magistrate judge entered a claim construction order construing several common terms of the asserted patents and determining that the claims of the SON patent were indefinite. The lower court adopted the magistrate’s recommendations and subsequently granted summary judgment for all three defendants on each of the patents. Traxcell appealed. The issues on appeal related to infringement and indefiniteness of means-plus-function claims.

First, Traxcell disputed the lower court’s grant of summary judgment for Sprint on the SON patent, arguing that Sprint’s accused technology included a structural equivalent to the disclosed structure under the function-way-result test. The asserted claim required a “means for receiving said performance data and corresponding locations from said tower to correcting radio frequency signals of said radio tower,” the corresponding function of which was “receiving said performance data and corresponding locations from said tower and correcting radio frequency signals of said tower.” The Federal Circuit explained that the disclosed structure of this means-plus-function limitation was a “very detailed” algorithm in the patent. Citing more than two decades of precedent, the Court emphasized that infringement of means-plus-function claims requires proof of three things: That the accused structure performs the (1) identical function, (2) in substantially the same way (3) with substantially the same result, as the disclosed structure. Because Traxcell neglected to even address at least nine steps of the algorithm, i.e., the disclosed structure, with respect to Sprint’s accused system (opting instead to focus on the function and result), the Court affirmed the lower court’s finding of noninfringement.

Second, the lower court found another claim of the SON patent indefinite based on the specification’s failure to disclose the necessary structure for its means-plus-function limitation. Traxcell did not appeal the indefiniteness finding itself, but sought leave to amend the claim to cure the indefiniteness, the denial of which Traxcell raised on appeal. The Federal Circuit explained that a “means-plus-function claim is indefinite [...]

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