Article 1490: Form of the contract for the disposal of the exclusive right to the trademark and State registration of the transfer of the exclusive right to the trademark, the guarantee of the exclusive right to the trademark and the right to use the trademark

1. A contract for the exclusion of an exclusive right to a trademark, a licence contract and other contracts by which the exclusive right to a trademark is governed, 2. A failure to comply with a written form shall render the contract null and void. The use of the mark, the transfer of the exclusive right to a trademark without a contract, is subject to State registration in accordance with the procedure established by article 1232 of the present Code.