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Sunday, November 16, 2025

Greenthread Asks Squires To Review Patent Ax Rulings

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Greenthread Asks Squires To Review Patent Ax Rulings

By Editorial Team

Chipmaker Greenthread has requested the head of the U.S. Patent and Trademark Office to review decisions made by the Patent Trial and Appeal Board that invalidated claims in three semiconductor patents. Greenthread alleges that the board displayed a bias towards the challengers.

Greenthread's move to seek a review from the USPTO comes after the PTAB decisions impacted the validity of claims in patents related to semiconductor devices with graded dopant regions. The affected patents are numbered 11,121,222 and 10,510,842.

The chipmaker has submitted a petition to the USPTO, urging a review of the PTAB rulings that favored the challengers. The companies involved in the case include Griswold and Texas Instruments Inc. Legal representation for Greenthread is being handled by law firms such as Baker Botts, Fish & Richardson, McKool Smith, and Newman Jones PLLC.

Greenthread's petition highlights concerns over the impartiality and fairness of the PTAB decisions and aims to address what it perceives as a bias in favor of the challengers. The company is seeking a thorough review of the rulings to ensure that justice and fairness are upheld in the patent dispute.

The case has drawn attention within the intellectual property and technology sectors, with industry experts closely monitoring the developments surrounding the review request submitted by Greenthread to the USPTO.

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Greenthread Asks Squires To Review Patent Ax Rulings Chipmaker Greenthread has requested the head of the U.S. Patent and Trademark Office to review decisions made by the Patent Trial and Appeal Board... Read the full IIPLA article: https://iipla.org/news/greenthread-asks-squires-to-review-patent-ax-rulings

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