News & Analysis as of

Patent Litigation Doctrine of Equivalents Patent Prosecution

Lathrop GPM

Federal Circuit Says Claim Cancellation Can Create Prosecution History Estoppel

Lathrop GPM on

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

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions

As part of the recovery from the global COVID-19 pandemic, the U.S. Court of Appeals for the Federal Circuit took steps to return to normal operations. It began requiring live oral arguments in August 2022 and, by November,...more

Knobbe Martens

Prosecution History Disclaimer and Estoppel Lead To Noninfringement

Knobbe Martens on

TRAXCELL TECHNOLOGIES, LLC V. NOKIA SOLUTIONS AND NETWORKS Before Prost, O’Malley, and Stoll. Appeal from the Eastern District of Texas. Summary: An applicant’s arguments distinguishing prior art during patent...more

American Conference Institute (ACI)

[Virtual Event] 18th Advanced Summit on Life Sciences Patents - August 5th - 6th, 9:00 am EDT

Perfect Your Patent Prosecution Strategies and Master the Patent Application Process in the U.S and Around the World. ACI’s 18th Global Summit on Life Sciences Patents virtual conference this August will provide practical...more

Knobbe Martens

Examiner Amendments Can Trigger Prosecution History Estoppel

Knobbe Martens on

Amgen, Inc. v. Amneal Pharmas. LLC et al - Before Newman, Lourie, and Taranto.  Appeal from the U.S. District Court for the District of Delaware. Summary: An examiner amendment may give rise to prosecution history...more

Knobbe Martens

The Tangential Exception to Prosecution History Estoppel

Knobbe Martens on

ELI LILLY AND COMPANY v. HOSPIRA, INC. Before Lourie, Moore, and Taranto. Appeal from the District Court for the Southern District of Indiana. Summary: A narrowing claim amendment does not necessarily surrender all...more

Mintz - Intellectual Property Viewpoints

Effect of Prosecution History Estoppel on Infringement Claim under Doctrine of Equivalents

The Federal Circuit in Amgen Inc. v. Coherus Biosciences Inc. affirmed a district court decision that once certain subject matter is clearly and unmistakably surrendered during prosecution, the patentee is barred from...more

Mintz - Intellectual Property Viewpoints

Effect of A Restriction Requirement on Prosecution History Estoppel

The decision whether to issue a Restriction Requirement during patent prosecution lies with the patent examiner, not the patent applicant. A Restriction Requirement can nevertheless trigger prosecution history estoppel that...more

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

Doctrine of Equivalents and Prosecution History Estoppel Around the World

Please see full Doctrine of Equivalents Chart for Countries around the World. ...more

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