Customizable model interrogatories that opposer's or petitioner's counsel can use as a starting point for drafting interrogatories to the applicant or respondent 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 for infringement, dilution, and other claims; the signature block; and the proof of service.