#on-sale-bar

#on-sale-bar

The Celanese v. ITC case examines whether selling products made from a secret process triggers the on-sale bar under revised patent law.

Supreme Court denied Celanese's petition over patent invalidation due to secret sales, affirming lower court ruling on the on-sale bar and statutory interpretation.

The on-sale bar in U.S. patent law can be triggered by sales that do not disclose the invention to the public.