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Infringement Doctrine of Equivalents

Knobbe Martens

Are Literal Infringement and the Doctrine of Equivalents the Same Issue?

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Before Prost, Taranto, and Chen.  Appeal from the United States District Court for the Western District of Wisconsin. Summary: Literal infringement and infringement under the doctrine of equivalents are treated as the same...more

Axinn, Veltrop & Harkrider LLP

Literal Infringement Is Identical to Infringement Under DOE … for Issue Preclusion

On August 28, 2024, the Federal Circuit issued a precedential decision regarding issue preclusion in Wisc. Alumni Research Found. v. Apple Inc., Nos. 2022-1884, 2022-1886. For issue preclusion to apply, “the issue actually...more

MoFo Life Sciences

Is DOE Now In Vogue?

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On March 27, 2023, the U.S. Supreme Court heard oral arguments in Amgen Inc. v. Sanofi, a closely watched case on the issue of enablement under 35 U.S.C. § 112(a). Though not the main point of contention, the doctrine of...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Nails Unqualified Expert

On January 21, in Kyocera Senco Industrial Tools Inc. v. ITC, the Federal Circuit found that the patent owner’s expert witness on infringement was unqualified under the definition of the level of ordinary skill in the art...more

MoFo Life Sciences

Life Sciences Patent Trends In 2022 – Doctrine Of Equivalents

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The Federal Circuit continues to tighten the standards for written description of functional claims, particularly in the biologics realm, which is putting patent applicants in the position of having to pursue narrow claims...more

Akin Gump Strauss Hauer & Feld LLP

IP Newsflash - July 2015 #3

DISTRICT COURT CASES - Expert Witness’ Flawed Infringement Opinion Supports an Award of Attorneys’ Fees - Defendants Six Flags Theme Parks Inc. sought an award of attorneys’ fees under 35 U.S.C. § 285 against...more

BakerHostetler

BakerHostetler Patent Watch: Cheese Sys., Inc. v. Tetra Pak Cheese and Powder Sys., Inc.

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Where a court holds a claim obvious without making findings of secondary considerations, the lack of specific consideration of secondary considerations ordinarily requires a remand....more

BakerHostetler

Patent Watch: Brilliant Instruments, Inc. v. GuideTech, Inc.

BakerHostetler on

On February 20, 2013, in Brilliant Instruments, Inc. v. GuideTech, Inc., the U.S. Court of Appeals for the Federal Circuit (Dyk, Moore,* Reyna) reversed and remanded the district court's summary judgment that Brilliant did...more

Knobbe Martens

Federal Circuit Review - Volume 2 | Issue 12 December 2012

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In This Issue: • Indexing Not Required for Online Prior Art Publication • Claim Indefinite for Not Disclosing Any Structure • Aluminum Not Inherently Disclosed - Excerpt from Claim Indexing Not Required...more

King & Spalding

Intellectual Property Newsletter - December 2012

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In This Issue: ..News From the Bench: - Clarification of the “Vitiation Test” when applying the Doctrine of Equivalents. - The “Success More Likely Than Not” and “Ordinary Observer” Standards for a...more

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