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1. the grounds for its granting no longer obtain;
2. the holder has failed to respect the field of application of his license;
3. the holder is late in paying the fee provided for in Article 166.
Chapter IV. Provisions common to patents and utility model certificates
Section 1. Actions for nullity of a patent or utility model certificate
Article 175: A commercial court shall revoke the utility model certificate or patent if the
person requesting revocation proves that one of the conditions provided for in
Articles 8 to 32 relating to patents and in Articles 91 to 96 and Article 103
relating to utility model certificates has not been met or that the certificate holder
is not the inventor or his successor in title.
Article 176: If grounds for revocation have only been established for part of the invention or
utility model certificate, only the corresponding claim(s) shall be revoked.
Article 177: Any revoked patent or utility model certificate, or any revoked claim or part of a
revoked claim, shall be deemed to be null and void on the date on which the
patent or certificate is granted.
Article 178: In the event of a legal dispute concerning the right to the patent or the utility
model certificate, the interested person may ask the court to transfer the title to
him rather than revoking it.
Article 179: The court’s final decision shall be notified to the Industrial Property Director,
who shall register and publish it without delay.
Section 2. Conversion of applications for patents or utility model certificates
Article 180: Before the technical examination, an application for a patent or a utility model
certificate or in any event, before the grant of a patent or the rejection of a patent
application, the applicant may, subject to payment of the prescribed fee, turn his
application into an application for a utility model certificate to which the date of
filing of the initial application has been assigned.
Article 181: Before the grant of a utility model certificate or the rejection of an application
for a utility model certificate, the applicant may, subject to payment of the
prescribed fee, turn his application into a patent application to which the date of
filing of the initial application is assigned.
Article 182: A request may not be converted more than once pursuant to Articles 180 and
181.
Article 183: The provisions of Title I of Part Two relating to patents as well as other
provisions which apply to patents and patent applications shall apply to utility
model certificates if they are compatible or have not been replaced by the
provisions of this Title.