The patentee is dead.

The patent law of our country stipulates that the term of invention patent is 20 years, and the term of utility model patent and design patent is 10 year. After this period, it will be invalid and has nothing to do with the death of the patentee.

In addition, to maintain the validity of the patent, it is necessary to pay a certain annual fee. If the patentee (or heir) fails to pay the annual fee as required, the patent right shall be terminated in advance.

If the patentee (heir) waives his patent right in writing, the patentee may terminate the patent invalidation in advance. The above has nothing to do with whether the patent applicant died or not.