How does commercial use affect public use under pre-AIA 35 U.S.C. 102(a)?

Source: FAQ (MPEP-Based)BlueIron Update: 2024-09-29

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

The MPEP states that “The nonsecret use of a claimed process in the usual course of producing articles for commercial purposes is a public use.” However, it’s important to note that a secret use of a process, even if the resulting product is commercially sold, does not necessarily constitute public use under pre-AIA 35 U.S.C. 102(a).

The key factor is whether the public could learn the claimed process by examining the product. If the process cannot be discerned from the product, then the commercial sale of the product resulting from a secret process does not qualify as public use under pre-AIA 35 U.S.C. 102(a).

Topics: MPEP 2100 - Patentability MPEP 2132 - Pre - Aia 35 U.S.C. 102(A) Patent Law Patent Procedure
Tags: Aia No By Others, Aia Public Use, Pre Aia 102a, Preaia 102a, Prior Art Aia