Understanding Proof of Ownership (Trademark): Your Legal Guide
Definition & Meaning
Proof of ownership in a trademark refers to the evidence that establishes a party's legal right to use a specific trademark. This proof can be demonstrated through various means, such as a certificate of federal registration, which serves as prima facie evidence of ownership. For trademarks that are not federally registered, proof can include evidence of the mark's use in commerce prior to any other party's use. This can involve documentation such as bills of sale for goods bearing the mark or advertising materials for service marks.