Mayo v. Prometheus
The following is an Austin, Texas patent attorney’s overview of Mayo v. Prometheus, and learning lessons for patent attorneys. BRIEF OVERVIEW: Claim 1 of Prometheus’ 6,355,623 patent which is in question in this case, recited: A method of optimizing therapeutic efficacy for treatment of an immune-mediated gastrointestinal disorder, comprising: (a) administering a drug providing 6-thioguanine [...]