In which cases shall the validity of a patent be terminated in Vietnam?

Under Article 95, the IP Law of Vietnam, the validity of a patent shall be terminated in the following cases:

·    The patent owner fails to pay the stipulated validity maintenance fee;

·    The owner declares relinquishment of the patent rights;

·    The owner no longer exists and does not have a lawful heir.

Where the patent owner fails to pay the validity maintenance fee before the stipulated time-limit, the validity of such patent shall, upon the expiration of such time-limit, automatically terminate as from the first day of the first valid year for which the validity maintenance fee has not been paid.

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