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. Auld Company v.

Patent 40

Patent Invention Inventor Patent Application 40

Patently-O

FEBRUARY 26, 2023

Masur (Chicago Law) and Lisa Larrimore Ouellette (Stanford Law). What is it that makes a use “public” for purposes of the public use bar? Does it matter whether the person doing the using is a member of the public, as opposed to the inventor? Begin with the question of who is doing the using.

Public Use 90

Public Use Inventor Invention Art 90

The IPKat

DECEMBER 22, 2023

Pour yourself a glass of mulled wine, curl up with your favourite feline and catch-up on your EPO case law. Another source of confusion is the divergent approaches of the UK courts and the EPO with respect to the test for the evidence standard in sufficiency and inventive step analysis. This is one to watch for 2024.

Invention 110

Invention Inventor Patent Law 110