News & Analysis as of

Patent Infringement Patent Applications Doctrine of Equivalents

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

American Conference Institute (ACI)

[Event] Pharma & Biotech Patent Litigation Conference in Europe - May 29th - 30th, Amsterdam, Netherlands

Hosted by C5 Group, the 17th Annual Forum on Pharma & Biotech Patent Litigation in Europe returns for another exciting year with curated programming that will provide up-to-the-minute information and strategic insights on...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

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

McDonnell Boehnen Hulbert & Berghoff LLP

Federal Circuit Issues Order Clarifying Status of Doctrine of Equivalents

The late Gilda Radner's character, Emily Latella, would consistently misapprehend something ("violins on television," "saving Soviet jewelry"), give a guest editorial on Weekend Update, and when corrected would say "Never...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

Knobbe Martens

Federal Circuit Finds That a Variant Polypeptide Sequence Infringes Under the Doctrine of Equivalents

Knobbe Martens on

Ajinomoto Co., Inc. vs. CH Cheiljedang Corp. (2018-1590, 2018-1629) - In a pair of cross-appeals from the International Trade Commission, the Federal Circuit affirmed the Commission’s ruling that one of CJ CheilJedang...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

Knobbe Martens

The Doctrine of Equivalents May Apply Despite Restriction Requirements and Narrow Claiming

Knobbe Martens on

UCB, INC. v. WATSON LABORATORIES INC. Before Taranto, Schall, and Chen. Appeal from the United States District Court for the District of Delaware. Summary: Application of the doctrine of equivalents may not be barred...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - February 2019

PATENT CASE OF THE WEEK - Duncan Parking Techs., Inc. v. IPS Group, Inc. and IPS Group, Inc. v. Duncan Solutions, Inc. et al., Appeal Nos. 2018-1205, -1360 (Fed. Cir. January 31, 2019) - The Court this week provided a...more

Ladas & Parry LLP

UK Supreme Court Decision In Actavis V. Eli Lilly – Doctrine Of Equivalents Recognized

Ladas & Parry LLP on

In its decision of July 12, 2017 in Actavis v. Eli Lilly, the Supreme Court of the United Kingdom for the first time formally adopted the concept of a doctrine of equivalents when considering what constituted an infringement...more

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