Patently-O

FEBRUARY 26, 2023

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? Or does it matter whether the use is itself in public, as opposed to taking place in secret behind closed doors?

Public Use 90

Public Use Inventor Invention Art 90

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.

Patent 40

Patent Invention Inventor Patent Application 40

The IPKat

DECEMBER 22, 2023

The topic of prior use has been elevated to the status of a referral to the Enlarged Board of Appeal ( G1/23 ). This is one to watch for 2024. The free evaluation of evidence of prior use (T 0042/19) New EBA referral: When is prior use of a product excluded from the prior art for lack of enablement?

Invention 110

Invention Inventor Patent Law 110