Standard Clauses providing sample language for asserting a prior registration under the thirteenth, miscellaneous (or catch-all) factor of a DuPont analysis in response to a likelihood of confusion refusal (also known as a Section 2(d) refusal) in a US Patent and Trademark Office (USPTO) trademark office action. Applicant or counsel can use these clauses to draft an office action response, together with clauses and language addressing any other applicable likelihood of confusion arguments and other refusal grounds. These Standard Clauses include integrated notes with important explanations and drafting tips.