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Patriot Scientific Processor Patent

In January 2007, PUBPAT filed a formal request with the United States Patent and Trademark Office to review a patent held by Patriot Scientific (OB: PTSC) that the company, which boasts of "primarily focusing on deriving revenue from licensing patents", is widely asserting against producers of computer microprocessors. In its filing, PUBPAT submitted prior art that the Patent Office was not aware of when reviewing the application that led to the issuance of the patent, described in detail how the prior art invalidates the patent and asked that the patent be revoked. In April 2007, the Patent Office granted PUBPAT's request for reexamination of the patent.

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