1904.15(b) Partial Cancellation of an International Registration
When the USPTO receives notification from the IB that the international registration has been restricted in part due to a partial cancellation, the MPU will determine what, if any, goods/services remain extended to the United States, and delete the canceled goods/services from the U.S. registration. The USPTO will then issue an updated registration certificate. 15 U.S.C. §1141j(a); 37 C.F.R. §7.30.
See also TMEP §1904.02(f)(iii) regarding partial cancellations in general, TMEP §1904.03(g)(ii) regarding partial cancellation of the goods/services in pending requests for extension of protection (§66(a) applications), and TMEP §1906.01(e) for information about filing a request to record a cancellation with the IB.