Article 147
(1) If industrial property right belongs to more than one person, in case a trademark or patent representative has not been assigned, all operations before the
Office, except for the demand for withdrawal and waiver, shall be carried out by the right owner who is assigned as joint representative by right holders. In case a joint representative has not been assigned by right holders, first right holder mentioned in application form shall be deemed as joint representative.
(2) In case the domicile of the joint representative is not within the territories of the Republic of Turkey, all operations shall be carried out by a trademark or patent attorney.
(3) Provisions relating to the collective trademarks are reserved.