Doctrine of Equivalents

News & Analysis as of

Opportunity for Equivalents in Claim Amendments

It is commonly held that the doctrine of equivalents is lost when claim amendments are made during patent prosecution. That is, any claim amendment that is made during patent prosecution surrenders or gives up elements which...more

Use of “Antithesis” of Claim Element Does Not Bar Application of Doctrine of Equivalents - Cadence Pharms. Inc. v. Exela Pharma...

In a Hatch-Waxman case, the U.S. Court of Appeals for the Federal Circuit found that the use of a claimed step, characterized as the “antithesis” of a limitation in the asserted claim, nonetheless satisfied that limitation...more

Federal Circuit Review | April 2015

No Recovery Of Lost Profits From Related Companies’ Activities - In WARSAW ORTHOPEDIC, INC. v. NUVASIVE, INC., Appeal Nos. 2013-1576, -1577, the Federal Circuit held that a company was not entitled to lost profits based...more

IP Newsflash - March 2015 #4

U.S. SUPREME COURT CASES - B&B Hardware, Inc. v. Hargis Industries, Inc., Potential Issue Preclusion on Likelihood of Confusion Rulings - On March 24, 2015, the United States Supreme Court ruled that that a...more

Cadence Pharmaceuticals Inc. v. Exela Pharmsci Inc. (Fed. Cir. 2015)

The Federal Circuit availed itself of another opportunity to demonstrate that the Supreme Court's recent decision in Teva v. Sandoz may be relevant in cases that are the exception rather than the rule. The Federal Circuit's...more

Supreme Court Finds Trademark Tacking to Be a Jury Question

On January 21, 2015, the Supreme Court of the United States issued a unanimous decision in Hana Financial, Inc. vs. Hana Bank, et. al., pertaining to a substantive trademark matter, namely, whether a judge or jury should...more

Doctrine of Equivalents Requires Full Analysis

EPOS Technologies Ltd. v. Pegasus Technologies Ltd. - Addressing doctrine of equivalents, the U.S. Court of Appeals for the Federal Circuit vacated a finding of no infringement by a lower court, explaining that such a...more

No Foreseeability Bar to The Application of the Doctrine of Equivalents - Ring & Pinion Service, Inc. v. ARB Corp. LTD.

Addressing the doctrine of equivalents infringement of a means-plus-function limitation, the U.S. Court of Appeals for the Federal Circuit reversed and remanded a grant of summary judgment of non-infringement based on an...more

Doctrine of Equivalents Opinion Excluded Where Plaintiff Failed to Comply with Disclosures Required by Scheduling Order

TransUnion Intelligence LLC ("TransUnion") filed a patent infringement action against SearchAmerica. After expert reports were served, SearchAmerica moved to exclude all references to the doctrine of equivalents and sought...more

Federal Circuit Decision Highlights Seldom-Used Doctrine of Equivalents Analysis

The Federal Circuit’s August 27, 2013 decision in Applied Medical Resources Corp. v. Tyco Healthcare Group LP (Case No. 2012-1412) (nonprecedential) relied on the seldom-used “difference in kind” test in analyzing...more

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

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

IP Update, Vol. 16, No. 3, March 2013

In This Issue: Supreme Court - Supreme Court Finds That “First Sale” Doctrine Applies to Works Patents - Joint Actors as It Relates to Method Claim Infringement; Federal Circuit Ruling Clears Way...more

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

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

Federal Circuit Review - Volume 2 | Issue 12 December 2012

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

Intellectual Property Newsletter - December 2012

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

Federal Circuit Review - Volume 2 | Issue 11 November 2012

In This Issue: • Doctrine of Equivalents: What Constitutes a Disclosed but not Claimed Equivalent? • When “Each” Means “Every”: Apple Loses a Round in Its Ongoing Battle with Samsung • Capturing Advances in...more

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