Mag Aerospace v. B/E Aerospace: Assignor Estoppel
B/E Aerospace | March 23, 2016
This case involves an advanced patent–but ancient property–law concept: assignor estoppel. The basic idea is that when an inventor or patent owner assigns a patent to another party, the original owner cannot challenge the validity of that patent. In Diamond Scientific Co. v. Ambico, Inc., 848 F.2d 1220, 1224 (Fed. Cir. 1988), the Federal Circuit explained the rationale for the doctrine.