Section – 126 of the Patents Act, 1970, provides that a person shall be

qualified to have his name entered in the register of patent agent, if he is a citizen of India, completed the age of 21 years, has obtained degree in science, engineering or technology from any university established under law for the time being in force in the territory of India or possesses such other equivalent qualification as Central Government may specify in this behalf, and in addition has passed qualifying examination for this purpose.

A person shall also be qualified to have his name entered in the register

of patent agent under Section – 126, if he has for a total period of not less than ten years functioned either as an examiner or discharged the functions of the controller under Section 73 of the Act or both, but ceased to hold any such capacity at the time of making the application for registration.
In the light of above legal position, a company secretary who fulfils the requirement of section 126 can have his name entered in the register of patent.