Talk:Patent cliff

Wiki Education Foundation-supported course assignment
This article was the subject of a Wiki Education Foundation-supported course assignment, between 21 August 2019 and 27 November 2019. Further details are available on the course page. Student editor(s): Jasminesu.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 13:36, 18 January 2022 (UTC)