News & Analysis as of

Summary Judgment Patent Litigation

A&O Shearman

Federal Circuit Affirms Patent Invalidity, Emphasizes Need For Substantive Expert Testimony

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On August 19, 2025, the U.S. Court of Appeals for the Federal Circuit issued an opinion affirming the U.S. District Court for the Eastern District of Louisiana’s grant of summary judgment that claims of Wilco Marsh Buggies &...more

Bradley Arant Boult Cummings LLP

A Super Touchy Reversal by the Federal Circuit Gives Taction Another Bite at Apple

In a significant blow to Apple, the Federal Circuit recently vacated a summary judgment of noninfringement in the case of Taction Technology, Inc. v. Apple Inc. The dispute centers on Taction’s U.S. Patent Nos. 10,659,885 and...more

Robins Kaplan LLP

Liquidia Techs., Inc. v. FDA - Updated 5.2.25

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Nature of the Case and Issue(s) Presented: FDA refused to approve Liquidia’s drug product, Yutrepia because another company, UTC, maintained marketing exclusivity. Liquidia sued FDA, and UTC intervened. The court granted...more

Akin Gump Strauss Hauer & Feld LLP

N.D. Cal. Judge Reverses Prior Order Barring Device Art “Materially Identical” to Printed Publications After Federal Circuit...

A Northern District of California judge recently granted a motion to reconsider his summary judgment ruling that defendant was barred from raising certain “device art” due to IPR estoppel under 35 U.S.C. § 315(e)(2). In the...more

Sheppard Mullin Richter & Hampton LLP

The Push and Pull of Prosecution Estoppel: How Cancelled Claims Can Affect the Scope of Non-Amended Claims

Prosecution history estoppel may narrow the scope of a claim that was unamended during prosecution, if another closely related claim is amended or cancelled during prosecution....more

Robins Kaplan LLP

Metacel Pharms. LLC v. Rubicon Rsch. Priv. Ltd.

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Nature of the Case and Issue(s) Presented: Ozobax is indicated for treatment of spasticity resulting from multiple sclerosis, and particularly flexor spasms and concomitant pain, clonus, and muscular rigidity. While the use...more

Irwin IP LLP

Fed. Cir. Ends Approach Employed To Make Challenging Patents As Abstract Ideas More Difficult 

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Optis Cellular Tech., LLC v. Apple Inc., No. 22-1925 (Fed. Cir. June 16, 2025) - Over a decade ago, the U.S. Supreme Court arguably made it easier to invalidate a patent for claiming nonpatentable abstract ideas when it...more

McDonnell Boehnen Hulbert & Berghoff LLP

Colibri Heart Valve LLC v. Medtronic Corevalve, LLC (Fed. Cir. 2025)

The doctrine of equivalents (DOE), a creation of the Supreme Court in Graver Tank & Mfg. v. Linde Air Products (1950), is balanced by the concept of prosecution history estoppel (PHE), the contours of which were delineated...more

Alston & Bird

Patent Case Summaries | Week Ending July 11, 2025

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Egenera, Inc. v. Cisco Systems, Inc., No. 2023-1428 (Fed. Cir. (D. Mass.) July 7, 2025). Opinion by Stark, joined by Prost and Taranto. Egenera owns a patent related to improved systems and methods for deploying and...more

Womble Bond Dickinson

Design Patent Obviousness: One Year Later

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One year has passed since the Court of Appeals for the Federal Circuit made its landmark decision in LKQ Corp. v. GM Global Tech. Operations LLC, which overruled the longstanding Rosen-Durling test for determining design...more

McDermott Will & Schulte

Appeal is too late to raise percolating claim construction dispute

The US Court of Appeals for the Federal Circuit affirmed a district court’s finding of noninfringement, concluding that the patent owner had improperly raised a claim construction issue for the first time on appeal – an...more

Patterson Belknap Webb & Tyler LLP

If at First You Don’t Succeed, Do Not Try Again: Judge Oetken Invokes Collateral Estoppel to Dismiss Plaintiff’s Infringement...

On July 9, 2025, Judge J. Paul Oetken (S.D.N.Y) found that collateral estoppel barred plaintiff Linfo IP, LLC from relitigating the validity of its asserted patent and dismissed Linfo’s infringement claims against Aero...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Vacates Jury Verdict and Damages for Multiple Errors

On June 16, in Optis Cellular Technology v. Apple Inc., the Federal Circuit issued a decision reversing the district court on multiple grounds, including § 101 patent eligibility and trial procedure, in vacating infringement...more

Alston & Bird

Patent Case Summaries | Week Ending June 13, 2025

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Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. v. Sirius XM Radio Inc., No. 2023-2267 (Fed. Cir. (D. Del.) June 9, 2025). Opinion by Lourie, joined by Dyk and Reyna....more

McDermott Will & Schulte

In Determining Subject Matter Eligibility, the Name of the Game Is the Claim

In a decision underscoring the distinct standards governing enablement under §§ 102 and 112, the US Court of Appeals for the Federal Circuit affirmed the Patent Trial & Appeal Board’s finding that a prior art reference was...more

McDermott Will & Schulte

Radio Silence Alone Doesn’t Prove Equitable Estoppel Defense

The US Court of Appeals for the Federal Circuit reversed a district court’s summary judgment grant based on an equitable estoppel defense, finding that the accused infringer failed to show that the patent owner’s silence or...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Mitek Systems Inc. v. United Services Automobile Association

Mitek Systems Inc. v. United Services Automobile Association, Appeal No. 2023-1687 (Fed. Cir. June 12, 2025) In our Case of the Week, the Federal Circuit examined the limits of declaratory judgment jurisdiction for a...more

Venable LLP

Court Finds bluebird bio’s Gene Therapy Zynteglo® (betibeglogene autotemcel) Does Not Infringe San Rocco Therapeutics’ Patents

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On May 16, 2025, the Court in Case No. 1:21-cv-01478 (D. Del.) granted bluebird bio’s motion for summary judgment, finding that its gene therapy Zynteglo® (betibeglogene autotemcel) does not infringe San Rocco Therapeutics‘...more

ArentFox Schiff

Federal Circuit Sinks Appeal Over Design Patent Claiming Well-Known Pool Features

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The US Court of Appeals for the Federal Circuit recently affirmed a summary judgment of no design patent infringement in North Star Tech. Int’l Ltd. v. Latham Pool Products, Inc., ruling that the patented and accused pool...more

Proskauer - The Patent Playbook

Interesting Recent § 101 Cases – Structural Components Are Not Enough

Your Package Could Not Be Delivered – District of Delaware Strikes Electronic Storage Room Claims as Patent Ineligible - Judge Choe-Groves of the United States Court of International Trade granted Defendant’s Motion to...more

Sheppard Mullin Richter & Hampton LLP

No Credit Where It Isn’t Due: The Importance of Preemption and Inventorship in Patent Law

Mr. Storms, an individual with significant experience with Bitcoin mining, is the founder and sole employee of BearBox LLC. Mr. McNamara and Dr. Cline co-founded Lancium in November 2017 with the intention of co-locating...more

Sheppard Mullin Richter & Hampton LLP

Federal Circuit Addresses District Court Oversight of Expert Testimony on Infringement

In Steuben Foods Inc. v. Shibuya Hoppmann Corporation, the Federal Circuit addressed the boundaries a district court may impose on experts by deeming their testimony wrong as a matter of law. Background - Steuben Foods...more

Venable LLP

Patent Litigation Defense 101: What to Know When You’ve Been Sued for Infringement

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If your company has just been named in a patent infringement lawsuit, you may be facing an unfamiliar and high-stakes process. Patent litigation is unlike most commercial disputes—it involves complex legal standards, highly...more

Downs Rachlin Martin PLLC

One Year of LKQ v. GM: How Much Has Really Changed?

One year ago today, the en banc Federal Circuit decided LKQ Corporation v. GM Global Technology Operations LLC, where it overturned the decades-old Rosen-Durling test for obviousness of a design patent for being “improperly...more

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

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