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Amendment of specification by controller.
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37.—(1) An applicant or a patentee may at any time, by request in writing left at the Office, seek leave to amend his specification, including drawings forming part thereof, by way of disclaimer, correction, or explanation, stating the nature of, and the reasons for, the proposed amendment.
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(2) The request and the nature of the proposed amendment shall be advertised in the prescribed manner, and at any time within one month from its first advertisement any person may give notice at the Office of opposition to the amendment.
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(3) Where such a notice is given the controller shall give notice of the opposition to the person making the request, and shall hear and decide the case.
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(4) Where no notice of opposition is given, or the person so giving notice of opposition does not appear, the controller shall determine whether and subject to what conditions, if any, the amendment ought to be allowed.
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(5) The decision of the controller in either case shall be subject to an appeal to the law officer, who shall, if required, hear the person making the request to amend and, where notice of opposition has been given, the person giving that notice, if he is, in the opinion of the law officer, entitled to be heard in opposition to the request, and, where there is no opposition, the controller, and may make an order determining whether and subject to what conditions (if any) the amendment ought to be allowed.
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(6) No amendment shall be allowed that would make the specification, as amended, describe an invention substantially larger than or substantially different from the invention described by the specification as it stood before amendment.
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(7) Leave to amend shall be conclusive as to the right of the party to make the amendment allowed, except in case of fraud; and the amendment shall be advertised in the prescribed manner, and shall in all courts and for all purposes be deemed to form part of the specification:
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Provided that a court shall be entitled in construing a specification as amended to refer to the specification as accepted and published.
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(8) This section shall not apply when and so long as any action for infringement or proceeding before the court for the revocation of a patent is pending.
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