Customizable model interrogatories that applicant's or respondent's counsel can use as a starting point for drafting interrogatories to the opposer or petitioner in a trademark opposition or cancellation proceeding before the Trademark Trial and Appeal Board (TTAB). This Standard Document contains integrated drafting notes with important explanations and tips for drafting the caption; introduction; definitions; instructions; specific interrogatories related to infringement, dilution, and other claims; the signature block; and the proof of service.