Letter informing of patent ownership without charging infringement does not provide actual notice under section 287
Amsted v. Buckeye Steel Castings was decided on April 18, 1994 on appeal from the Northern District of Illinois. The case involved many issues but this post will only focus on actual notice under § 287(a). Plaintiff Amsted brought suit against defendant Buckeye on February 25, 1991. In 1986, Amsted sent Buckeye and other …