A sample form that a trademark owner (opposer) may use as a starting point for drafting a notice of opposition to commence an opposition proceeding before the Trademark Trial and Appeal Board (TTAB). The notice of opposition seeks an order refusing registration of another party's (applicant's) applied-for trademark on the grounds of likelihood of confusion and, optionally, dilution. This Standard Document contains integrated drafting notes with important explanations and tips for drafting the allegations set out in the notice.