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Patent Prosecution History Patent Prosecution

Haug Partners LLP

Federal Circuit Emphasizes the Importance of Prosecution History in Resolving Ambiguous Claim Terms in University of Massachusetts...

Haug Partners LLP on

On June 13, 2022, the Federal Circuit issued a precedential opinion that vacated the district court’s judgment of indefiniteness, deciding that the ruling was based on an erroneous claim construction. The patents-in-suit...more

Morrison & Foerster LLP - Federal Circuitry

Last Week In The Federal Circuit (April 4 - 8): Claim Differentiation Carries The Day

Last week was argument week at the Federal Circuit, and we’ve already begun seeing decisions from the argued cases trickle in. Below we provide our usual weekly statistics and a detailed discussion of our case of the week—our...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Indefiniteness Is Not Judged by the “Claim Language, Standing Alone”

Evaluating whether a patent claim is sufficiently “definite” under 35 U.S.C. § 112 requires looking beyond just the claim language itself. The Federal Circuit reaffirmed this fundamental principle in a recent decision...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

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (August 9-13): The Dangers of Relying Solely on Extrinsic Evidence for Claim Construction

Although things often slow down in Washington in the August heat and humidity, that wasn’t the case this past week for the Federal Circuit. All told, the Court issued 5 precedential opinions and ruled in 17 cases. Below we...more

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (June 21–25): How Airtight Does an Air Mattress Have to Be?

The Federal Circuit announced last week that it will resume in-person oral arguments later this summer. The Court’s new protocols generally take effect with the September 2021 sitting, and we noticed that the Court has also...more

Mintz - Intellectual Property Viewpoints

Expediting Patent Prosecution with the Newly Extended Collaborative Search Pilot Program

On February 4, 2021 the U.S. Patent and Trademark Office (USPTO) extended for two years the expansion of the Collaborative Search Pilot Program (CSP), which began in 2015 and is now scheduled to end October 31, 2022. The CSP...more

Smart & Biggar

Foreign Prosecution History Evidence Permitted under Section 53.1 of the Patent Act

Smart & Biggar on

The Federal Court has now released the first decision in which the scope of Section 53.1 of the Canadian Patent Act—the so-called “file wrapper estoppel” provision—has been considered. We recently published an IP Update...more

Smart & Biggar

File wrapper estoppel in Canada

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The Canadian Patent Act was amended last year to include a new provision which allows prosecution histories into evidence in patent proceedings to rebut representations made by the patentee regarding claims construction. ...more

Mintz - Intellectual Property Viewpoints

Representations Made by a Patentee during Foreign Prosecution May Be Used in Claim Construction for U.S. Patents

Claim construction, the process by which a court interprets the scope and meaning of a patent’s claims, is a crucial part of patent litigation. In fact, claim construction can make or break a patentee’s case for infringement...more

Smart & Biggar

Contrasts and Distinctions: Canadian Patent Law Developments in 2018

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2018 served up a smorgasbord of disparate patent law developments in Canada. Most notably, ratification of a new trade agreement negotiated amongst Canada, the United States and Mexico would require introduction of a patent...more

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