2.93—Institution of interference.
An interference is instituted by the issuance of a notice of interference to the parties. The notice shall be sent to each applicant, in care of the applicant's attorney or other representative of record, if any, and if one of the parties is a registrant, the notice shall be sent to the registrant or the registrant's assignee of record. The notice shall give the name and address of every adverse party and of the adverse party's attorney or other authorized representative, if any, together with the serial number and date of filing and publication of each of the applications, or the registration number and date of issuance of each of the registrations, involved.