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 obligations as such.

(6) Nothing in this section shall affect the rights of the assignees of a partial interest in a patent created before the commencement of this Act.

51. Power of Controller to give directors to co-owners

(1) Where two or more persons are registered as grantee or proprietor of a patent, the Controller may, upon application made to him in the prescribed manner by any of those persons, give such directions in accordance with the application as to the sale or lease of the patent or any interest therein, the grant of licences under the patent, or the exercise of any right under section 50 in relation thereto, as he thinks fit.

(2) If any person registered as grantee or proprietor of a patent fails to execute any instrument or to do any other thing required for the carrying out of any direction given under this section within fourteen days after being requested in writing so to do by any of the other persons so registered, the Controller may, upon application made to him in the prescribed manner by any such other person, give directions empowering any person to execute that instrument or to do that thing in the name and on behalf of the person in default.

(3) Before giving any directions in pursuance of an application under this section, the Controller shall given an opportunity to be heard-


 * a. in case of an application under sub - section (1), to the other person or persons registered as grantee or proprietor of the patent
 * b.in the case of an application under sub-section (2), to the person in default.

(4) No direction shall be given under this section so as to affect the mutual rights or obligations of trustees or of the legal representatives of a deceased person or of their rights or obligations as such, or which is inconsistent with the terms of any agreement between persons registered as grantee or proprietor of the patent.

52. Grant of patent to true and first inventor where it has been obtained by another in fraud of him

(1) Where a patent has been revoked on the ground that the patent was obtained wrongfully and in contravention of the rights of the petitioner or any person under or through whom he claims, or, where in a petition for revocation, the court, instead of revoking the patent, directs the complete specification to be amended by the exclusion of a claim or claims in consequence of a finding that the invention covered by such claim or claims had been obtained from the petitioner, the court may, by order passed in the same proceeding, permit the grant to the petitioner of the whole or such part of the invention which the court finds has been wrongfully obtained by the patentee, in lieu of the patent so revoked or is excluded by amendment.

(2) Where any such order is passed, the Controller shall, on request by the petitioner made in the prescribed manner grant to him -

(i) in cases where the court permits the whole of the patent to be granted, a new patent bearing the same date as the patent revoked bearing the same date and number as the patent revoked;

(ii) in cases where the court permits a part only of the patent to be granted, a new patent for such part bearing the same date as the patent revoked and numbered in such manner as may be prescribed:

Provided that the Controller may, as a condition of such grant, require the petitioner to file a new and complete specification to the satisfaction of the Controller describing and claiming that part of the invention for which the patent is to be granted.