News & Analysis as of

Patent Invalidity Patent Trial and Appeal Board Patent Infringement

Jenner & Block

Inter Partes Review Invalidity Finding Does Not Collaterally Estopell Assertion of Unchallenged Claims in Same Patent

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In a February 10, 2025 order, the Federal Circuit Court of Appeals rejected the application of the collateral estoppel doctrine to patent claims asserted in a district court infringement action where other claims in the same...more

Jones Day

PTAB Institutes IPR Despite Concurrent Ex Parte Reexamination

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In Thermaltake Technology Co., Ltd. et al v. Chien-Hao Chen et al, IPR2024-01230, Paper 12 (PTAB Feb. 19, 2025), the PTAB granted the institution of inter partes review (“IPR”) while an ex parte reexamination (“EPR”) on the...more

Jones Day

PTAB Allows Three Concurrent IPR Petitions for Unusual Patent Claims

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Recently, the Patent Trial and Appeal Board (“the Board”) was persuaded to consider the merits of three out of seven concurrent petitions for an inter partes review of a single patent due to the patent’s complicated claiming...more

Jones Day

Federal Circuit Reverses District Court’s Application Of Collateral Estoppel

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Kroy IP Holdings, LLC sued Groupon, Inc., alleging infringement of 13 claims of U.S. Patent No. 6,061,660 (“’660 patent’), which relates to incentive programs over computer networks. Those claims were invalidated via...more

Sheppard Mullin Richter & Hampton LLP

You Snooze, You Lose: Federal Circuit Emphasized Once Again the Importance of Preserving Issues for Appellate Review

AliveCor, Inc. v. Apple, Inc., No. 23-1512 (Fed. Cir. 2025) – On March 7, 2025, the Federal Circuit affirmed the Patent Trial and Appeal Board’s inter partes review (“IPR”) decisions invalidating all claims of three AliveCor...more

Alston & Bird

Patent Case Summaries | Week Ending March 21, 2025

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AMP Plus, Inc. v. DMF, Inc., No. 2023-1997 (Fed. Cir. (PTAB) Mar. 19, 2025). Opinion by Reyna, joined by Lourie and Bryson. DMF owns a patent directed to a compact recessed lighting system that can be installed in a standard...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Product-by-Process Analysis: Invalidity ≠ Infringement

On March 4, 2025, the Federal Circuit affirmed the Patent Trial and Appeal Board’s (“PTAB”) decision in Restem, LLC v. Jadi Cell, LLC, No. 23-2054, 2025 WL 679195, at *1 (Fed. Cir. Mar. 4, 2025), finding that the patent...more

Knobbe Martens

Federal Circuit Review | February 2025

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In HD Silicon Solutions LLC V. Microchip Technology Inc., Appeal No. 23-1397, the Federal Circuit held that  all but one patent claim were invalid as obvious because the claimed material, as properly construed, was disclosed...more

Venable LLP

Spotlight On: Actemra® (tocilizumab) / Tofidence™ (tocilizumab-bavi) / Tyenne® (tocilizumab-aazg) / Avtozma® (tocilizumab-anoh) -...

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Tocilizumab Challenged Claim Types in IPRs: Claims are counted in each IPR, so claims from the same patent challenged in multiple IPRs are counted more than once. Within each IPR, claims are counted only once, whether they...more

Venable LLP

Spotlight On: Herceptin® (trastuzumab) / Ogivri® (trastuzumab-dkst) / Herzuma® (trastuzumab-pkrb) / Ontruzant® (trastuzumab-dttb)...

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Trastuzumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more

Amundsen Davis LLC

Preserving Patent Rights: Impact of Public Use on Patenting

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For a business planning to market a product that incorporates an invention, having an enforceable patent to protect the invention is often desirable. Two recent federal circuit cases reiterate what many patent holders and...more

Kilpatrick

COVID-19 Vaccine Patent War: Moderna's Claims Invalidated by PTAB

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The door may now be open for additional challenges to patents covering mRNA vaccine technologies, paving the way for increased competition in the mRNA vaccine space. On Wednesday, March 5, 2025, the United States Patent...more

Jones Day

PTAB Retains Jurisdiction Of Expired Patents

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The Federal Circuit rejected a recent argument that the PTAB does not have inter partes review (IPR) jurisdiction over expired patents. Because even expired patents involve the grant of public rights, the court explained that...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Year in Review – Caveat Experimenter: Using Experimental Data in PTAB Proceedings Comes With Risks

Parties involved in Patent Trial and Appeal Board (PTAB) proceedings sometimes contemplate submitting experimental data to support their positions. Although such data can be useful, there also are risks. Several recent cases...more

Hudnell Law Group

Differing Burdens of Proof Limits Estoppel Effect of PTAB Final Written Decision

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On February 10, 2025, the United States Court of Appeals for the Federal Circuit issued a decision in Kroy IP Holdings, LLC v. Groupon, Inc., reversing and remanding a district court ruling that had dismissed Kroy’s patent...more

Jones Day

Speculative IPR Discovery Request Not in the Interest of Justice

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“Because Congress intended inter partes reviews to serve as a faster and more cost-effective alternative to litigating validity in district courts, discovery in inter partes reviews is limited.” See Garmin Int’l, Inc. v....more

McDermott Will & Emery

Collateral Estoppel Doesn’t Apply to Unchallenged IPR Claims

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The US Court Appeals for the Federal Circuit found that despite a Patent Trial & Appeal Board determination that certain challenged patent claims were unpatentable based on a preponderance of the evidence standard, the patent...more

WilmerHale

Federal Circuit Patent Watch: Federal Circuit Orders Remanded Case Reassigned to New Judge, Finding That Trial Judge’s Statements...

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Precedential and Key Federal Circuit Opinions - HD SILICON SOLUTIONS LLC v. MICROCHIP TECHNOLOGY INC. [OPINION] (2023-1397, 2/6/2025) (Lourie, Stoll, Cunningham) - Lourie, J. The Board affirmed the Final Written...more

Alston & Bird

Patent Case Summaries | Week Ending February 14, 2025

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Kroy IP Holdings, LLC v. Groupon, Inc., No. 2023-1359 (Fed. Cir. (D. Del.) Feb. 10, 2025). Opinion by Reyna, joined by Prost and Taranto. Kroy sued Groupon for patent infringement, asserting thirteen claims. Groupon...more

Knobbe Martens

Federal Circuit Review | January 2025

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In Honeywell International Inc. v. 3G Licensing, S.A., Appeal No. 23-1354, the Federal Circuit held that under the obviousness standard of 35 U.S.C. § 103, the motivation to modify prior art does not need to be the same as...more

Alston & Bird

Patent Case Summaries | Week Ending January 31, 2025

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Apple Inc., et al. v. Gesture Technology Partners, LLC, Nos. 2023-1501, -1554 (Fed. Cir. (PTAB) Jan. 27, 2025). Opinion by Dyk, joined by Lourie and Hughes....more

Jones Day

PTAB Denies Motion for Joinder After Unsuccessful District Court Invalidity Challenge

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On June 6, 2024, Shenzhen Waydoo Intelligence Technology Co., Ltd. (“Waydoo”) filed a petition for inter partes review (“IPR”) of U.S. Patent No. 9,359,044 (“the ’044 Patent”) (“IPR998”), assigned to MHL Custom, Inc. (“MHL”)....more

Alston & Bird

Patent Case Summaries | Week Ending January 24, 2025

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Steuben Foods, Inc. v. Shibuya Hoppmann Corp., et al., No. 2023-1790 (Fed. Cir. (D. Del.) Jan. 24, 2024). Opinion by Moore, joined by Hughes and Cunningham. Steuben sued Shibuya for infringement of three patents relating to...more

Jones Day

Two Many IPRs: Different References Insufficient for Parallel IPRs

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The Patent Trial and Appeal Board (“PTAB”) recently denied institution in an inter partes review (“IPR”) where Petitioner later filed a parallel petition against the same claims of the same patent.   Shenzhen Root Tech. Co.,...more

Warner Norcross + Judd

Federal Circuit Affirms the Use of ‘Secret’ Prior Art

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In a recent precedential opinion, the United States Court of Appeals for the Federal Circuit affirmed that a patent application constitutes prior art as of its filing date, not its publication date. In Lynk Labs. Inc. v....more

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