A sample motion that counsel representing an entity challenging a patent may use to join an existing inter partes review (IPR) pending before the Patent Trial and Appeal Board (PTAB) under 35 U.S.C. § 315(c) and 37 C.F.R. §§ 42.22 and 42.122(b). It includes optional language the petitioner's counsel may use as a starting point regarding the precise relief requested, statement of material facts, and supporting argument. This Standard Document has integrated drafting notes with important explanations and drafting tips.