50. Amendment of other documents
The Registrar may, at the written request of the person who has filed an application other than an application for the registration of a trade mark, a notice or other document for the purposes of this Act, or at the written request of the person's agent, amend the application, notice or document—
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(a) to correct a clerical error or an obvious mistake; or
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(b) if the Registrar is of the opinion that it is fair and reasonable in all the circumstances of the case to do so.