37 CFR 7.36
Affidavit or declaration of use in commerce or excusable nonuse required to avoid cancellation of an

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§7.36 Affidavit or declaration of use in commerce or excusable nonuse required to avoid cancellation of an extension of protection to the United States.

(a)

Subject to the provisions of section 71 of the Act, a registered extension of protection shall remain in force for the term of the international registration upon which it is based unless the international registration expires or is cancelled under section 70 of the Act due to cancellation of the international registration by the International Bureau.

(b)

During the following time periods, the holder of an international registration must file an affidavit or declaration of use or excusable nonuse, or the registered extension of protection will be cancelled under section 71 of the Act:

(1)

On or after the fifth anniversary and no later than the sixth anniversary after the date of registration in the United States; and

(2)

Within the six-month period preceding the end of each ten-year period after the date of registration in the United States, or the three-month grace period immediately following, with payment of the grace period surcharge required by section 71(a)(2)(B) of the Act and § 7.6.