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(Podcast) The Briefing: 2025 IP Resolutions Start With a Review of IP Assets
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Wolf Greenfield Attorneys Review 2024 and Look Ahead to 2025
(Podcast) The Briefing: A Very Patented Christmas – The Quirkiest Inventions for the Holiday Season
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A Conversation with Phil Hamzik
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The Federal Circuit recently issued a significant decision in the ongoing patent litigation between Laboratory Corporation of America Holdings (Labcorp) and Qiagen Sciences, LLC, reversing a Delaware district court’s judgment...more
PowerBlock Holdings, Inc. v. iFit, Inc., No. 2024-1177 (Fed. Cir. (D. Utah) Aug. 11, 2025). Opinion by Stoll, joined by Taranto and Scarsi (sitting by designation). PowerBlock sued iFit for infringement of a patent directed...more
The Federal Circuit recently reversed a $4.7M verdict in a patent lawsuit involving two patents concerning next-generation sequencing methods—U.S. Patent Nos. 10,017,810 and 10,450,597. Both patents concern DNA preparation...more
Laboratory Corporation of America Holdings v. Qiagen Sciences, LLC, Appeal No. 2023-2350 (Fed. Cir. Aug. 13, 2025) - In our Case of the Week, the Federal Circuit reversed a jury finding of infringement from the District...more
On July 18, 2025, the U.S. Court of Appeals for the Federal Circuit reversed a $106 million jury verdict in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No. 2023-2153, finding that Colibri’s infringement claim under...more
COLIBRI HEART VALVE LLC v. MEDTRONIC COREVALVE, LLC - Before Taranto, Hughes, and Stoll. Appeal from the United States District Court for the Central District of California. The Federal Circuit reversed a $106 million...more
On July 18, 2025, the US Court of Appeals for the Federal Circuit reversed a lower court ruling in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, holding that prosecution history estoppel barred the patentees’ doctrine...more
Prosecution history estoppel typically arises when a claim is rejected during prosecution and is then amended (narrowed) to overcome the rejection. However, in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No....more
In a July 18 precedential decision in Colibri Heart Valve LLC v. Medtronic CoreValve LLC, the U.S. Court of Appeals for the Federal Circuit overturned a $106 million jury verdict against Medtronic for infringement of a patent...more
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
In this edition of The Precedent, we outline the decision in Steuben Foods Inc. v. Shibuya Hoppmann Corp. This case addresses whether the reverse doctrine of equivalents (RDOE) is a viable defense to patent infringement....more
On January 24, in Steuben Foods, Inc v. Shibuya Hoppman Corporation, the Federal Circuit found that Steuben had made a compelling argument that the common law Reverse Doctrine of Equivalents (RDOE) did not survive the 1952...more
The US Court of Appeals for the Federal Circuit ruled that the “substantially the same way” comparison in connection with a doctrine of equivalents (DOE) analysis involving a means-plus-function claim limitation should focus...more
Steuben Foods, Inc. v. Shibuya Hoppman Corp., Appeal No. 2023-1790 (Fed. Cir. Jan. 24, 2025) In its only precedential patent decision this week, the Federal Circuit addressed an “anachronistic exception, long mentioned but...more
Addressing for the first time the issue of whether bioequivalence data and in vitro testing can show that an abbreviated new drug application (ANDA) product with different immediate and delayed release portions infringed on a...more
The doctrine of equivalents is a staple patent law principle, addressing the tension between providing fair protection to innovative ideas and ensuring legal certainty for third parties. However, like most patent laws, the...more
Mirror Worlds Technologies, LLC v. Meta Platforms, Inc., Appeal Nos. 2022-1600, -1709 (Fed. Cir. Dec. 4, 2024) In this appeal from the United States District Court for the Southern District of New York, the Federal...more
On October 24, 2024, the United States Court of Appeals for the Federal Circuit issued a ruling in Nexstep, Inc. v. Comcast Cable Communications, LLC, affirming the District Court for the District of Delaware’s judgment of...more
The US Court of Appeals for the Federal Circuit affirmed a district court determination that a patent owner had not provided the “particularized testimony and linking argument” required to demonstrate equivalence under the...more
Precedential and Key Federal Circuit Opinions - NEXSTEP, INC. v. COMCAST CABLE COMMUNICATIONS, LLC [OPINION] (2022-1815, 2022-2005, 2022-2113, 10/24/2024) (Reyna, Taranto, Chen) - Chen, J. The Court affirmed the...more
Telefonaktiebolaget LM Ericsson, Ericsson AB, Ericsson, Inc. v. Lenovo (United States), Inc. et. al., Appeal No. 2024-1515 (Fed. Cir. Oct. 24, 2024) In our Case of the Week, the Federal Circuit clarified that, for an...more
In Wisconsin Alumni Research Foundation v. Apple, the Federal Circuit expanded the preclusive effect of non-infringement rulings. It ruled that prior judgments of non-infringement can prevent follow-on lawsuits involving...more
In a joint appeal of two adverse decisions from the District Court, the Federal Circuit on procedural grounds rejected an appeal from the Wisconsin Alumni Research Foundation ("WARF") in Wisconsin Alumni Research Foundation...more
Precedential and Key Federal Circuit Opinions - WISCONSIN ALUMNI RESEARCH FOUNDATION v. APPLE INC. [OPINION] (2022-1884, 8/28/2024) (Prost, Taranto, and Chen) - Prost, J. The Court affirmed two final judgments of the...more
Wisconsin Alumni Research Foundation v. Apple Inc., Appeal Nos. 2022-1884, -1886 (Fed. Cir. Aug. 28, 2024) In its only precedential patent decision last week, the Federal Circuit brought to a close a long-running dispute...more