Finding a “real interest” in a mark's registration can be shown “without proprietary rights in the mark or without asserting that it has a right or has an interest in using the alleged mark”
Holding that challenger established standing under § 1064 notwithstanding the parties’ written agreement not to challenge each other's registration or each other's rights to use and sell goods under the mark
Stating that, in such proceedings, the Patent and Trademark Office may "modify the application or registration by limiting the goods or services specified therein"