C.F.R. » Title 37 » CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE › SUBCHAPTER A—GENERAL › PART 7—RULES OF PRACTICE IN FILINGS PURSUANT TO THE PROTOCOL RELATING TO THE MADRID AGREEMENT CONCERNING THE INTERNATIONAL REGISTRATION OF MARKS › Subpart A—General Information

37 C.F.R. § 7.3

Correspondence must be in English

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International applications and registrations, requests for extension of protection and all other related correspondence with the Office must be in English. The Office will not process correspondence that is in a language other than English.