Article 51
(1) In case a geographical indication or traditional specialty guaranteed has been decided as invalid by the court, the legal protection provided by this
Code for the registered geographical sign or traditional product name shall be deemed not to have arisen.
(2) Without prejudice to claims of compensation by persons having the right to use a registered geographical sign or traditional product name for damages caused by bad faith, the retroactive effects of invalidity shall not extend to the following:
a) Any final judgments for infringement of registration rights reached and enforced prior to the decision of invalidity;
b) Contracts concluded and executed prior to the decision of invalidity.
(3) Partial or total reimbursement of sums paid under the contracts may be claimed on grounds of equity, in scope of subparagraph (b) of second paragraph.
(4) Final court decision shall be notified to the Office by the Court ex officio. The geographical sign or traditional product name deemed as invalid, shall be cancelled from the register and information regarding the cancellation is published in the Bulletin.