1208.03(a) Procedures on Request for Interference
The request for interference should be in a separate document in the form of a petition, and should be captioned as a petition. The petition fee indicated in 37 C.F.R. §2.6 should accompany the request. A petition to declare an interference should not be filed before the application has been examined and the mark has been found to be registrable but for the existence of one or more conflicting pending applications.
A request for interference does not make an application “special” or alter the normal order of examination.
See TBMP Chapter 1000.