A Checklist of practical and legal issues that counsel should consider when working with prior artists at all stages of patent litigation. This Checklist guides counsel through the key issues relating to the role of prior artists in patent litigation, legal issues to understand before contacting a prior artist, the benefits and risks of working with a prior artist at various stages in a patent case, and how to find, retain, represent, collect documents from, depose, and offer testimony from a prior artist.