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I was already like this before you got here: prior use as an exception to patent infringement

Garrigues Blog

JANUARY 12, 2022

The owner of a patent cannot enforce their rights against those who used the invention covered by the patent or made serious preparations for such use before the priority date. What is the right of prior use or “pre-use”? What prerogatives does the right to prior use grant?

Patent Infringement

Patent Infringement Invention Patent Patent Law

Celanese v. ITC: Can a Secret Manufacturing Process Be Patented After Sale of the Resulting Product?

Patently-O

MARCH 4, 2024

by Dennis Crouch The Federal Circuit held oral arguments on March 4, 2024 in the important patent case of Celanese Int’l. The question: Under the AIA, does sale of a product by the patent applicant prohibit the patentee from later patenting the process used to make the product? v ITC , 22-1827 (Fed. Compare D.L.

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Intellectual Property Pulse

I was already like this before you got here: prior use as an exception to patent infringement

Celanese v. ITC: Can a Secret Manufacturing Process Be Patented After Sale of the Resulting Product?

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