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Intellectual Property Protection Patent Litigation Doctrine of Equivalents

Vorys, Sater, Seymour and Pease LLP

The Precedent: Federal Circuit Sidesteps Ruling on the Reverse Doctrine of Equivalents Theory in Steuben Foods Inc. v. Shibuya...

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

Fitch, Even, Tabin & Flannery LLP

Is the End Near for the Reverse Doctrine of Equivalents?

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

McDermott Will & Emery

Bottling the Truth: Equivalence and Reverse Equivalence

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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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Steuben Foods, Inc. v. Shibuya Hoppman Corp.

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

McDermott Will & Emery

The Devil Is in the Details: Bioequivalence, In Vitro Testing Not Enough to Establish Infringement

McDermott Will & Emery on

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

Jones Day

Unified Patent Court: First Ruling on Equivalent Infringement

Jones Day on

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

Hudnell Law Group

Generalized Testimony Falls Short in Doctrine of Equivalents Analysis

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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

McDermott Will & Emery

Equivalence Requires Element-by-Element Proof With Linking Argument

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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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - October 2024 #4

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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2024

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

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

McDermott Will & Emery

Sound the Alarm: Reasonable Royalty Apportionment Analysis Overlooks “Sleep State”

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After a jury found infringement of two patents and awarded almost $2.2 billion in damages, the US Court of Appeals for the Federal Circuit reversed the infringement finding for one asserted patent, vacated the damages award...more

Proskauer - Minding Your Business

Scope of Issued Patents May be Limited by Prosecution Estoppel Created in Child Cases

Cell therapy products in the U.S. are estimated to be worth approximately $4.5 billion currently and expected to grow to over $30 billion in the next ten years. As market value increases litigation is bound to heat up....more

Buckingham, Doolittle & Burroughs, LLC

Amgen is Not the End of Chemical Innovation

Some chemical innovators have found the recent Supreme Court decision in Amgen v. Sanofi to suggest that chemical inventions will be subject to new and draconian disclosure standards going forward. A few have even suggested...more

Irwin IP LLP

Amended Complaint Gives Plaintiff a Do-Over, Not the Defendant

Irwin IP LLP on

Power Probe Grp., Inc. v. Innova Electronics Corp., 21-cv-00332 (D. Nev. Apr. 27, 2023) While it is accepted that filing an amended complaint supersedes the original complaint rendering it without legal effect, a defendant...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions: Kyocera Senco Indus. Tools v. Int’l Trade Comm’n,...

The patent holder, Kyocera, filed a complaint in the International Trade Commission against Koki in Certain Gas Spring Nailer Prods. & Components Thereof, Inv. No. 337-TA-1082, 2020 WL 2093834 (Apr. 28, 2020). Kyocera’s...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

Kilpatrick

Protecting Antibody Innovations: Searching for Equivalents under The Doctrine of Equivalents —A Discussion of Teva v. Eli Lilly...

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United States courts have recently tightened the written description requirements for antibody claims. The scope of issued claims is now often limited to antibodies with specific sequences of the CDR and the heavy chain and...more

Sunstein LLP

It’s Not Complicated: Make Sure the Technical Expert You Retain to Testify About Infringement Has Credentials That Match the Level...

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In infringement suits, the patentee must show that each element of a patent claim is infringed either literally by an accused product or infringed under the doctrine of equivalents. Literal infringement means the accused...more

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

PTAB Strategies and Insights: January 2022 - Federal Circuit Holds that Your Technical Expert Must be a POSA

In Kyocera Senco Industrial Tools Inc. v. International Trade Commission, the Federal Circuit held in a precedential opinion that expert witnesses must at least have ordinary skill in the art. Because Kyocera’s expert did not...more

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

PTAB Strategies and Insights: January 2022

The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return on investment for all stakeholders looking at the entire...more

Proskauer - The Patent Playbook

A Reminder of Doctrine of Equivalents in Biotechnology: Jennewein Biotechnologie GmbH v. International Trade Commission

Doctrine of equivalents (DOE) can be applied as a mechanism to hold a party liable for patent infringement even if the product or process does not literally infringe a patent claim, if the difference is “insubstantial”....more

Robins Kaplan LLP

Horizon Medicines LLC v. Alkem Labs. Ltd.

Robins Kaplan LLP on

Duexis® (ibuprofen / famotidine) - Case Name: Horizon Medicines LLC v. Alkem Labs. Ltd., No. 18-1014-RGA, 2020 WL 7022591 (D. Del. Nov. 30, 2020) (Andrews, J.) ...more

Fish & Richardson

[Webinar] Life Sciences | 2020 Year in Review - January 27th, 1:30 pm - 2:30 pm ET

Fish & Richardson on

2020 has been referred to as an unprecedented year for the world in so many ways—the pandemic, the California and Washington fires, the racial justice protests and calls to action—but that didn’t stop the Federal Circuit from...more

Akerman LLP

Disclosure-Dedication Doctrine Sinks Doctrine of Equivalents Infringement Claim at Pleadings Stage

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The Federal Circuit affirmed the U.S. District Court for District of Delaware's judgment of noninfringement agreeing the case could be dismissed at the pleadings stage because the disclosure-dedication doctrine barred...more

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