37 CFR 7.3
Correspondence must be in English.

This document contains one section of Chapter 37 of the Code of Federal Regulations. This page was last updated in November, 2005. You may return to the main 37 CFR Index, or to the index for one of the follow parts:

part 1 (patents);
part 2 (trademarks);
part 3 (assignments);
part 10 (representation); or
part 200+ (copyrights).

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§7.3 Correspondence must be in English.

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.