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Section 31 of the Patents Act 1970: Anticipation by Public Display, etc

Section 31 (Anticipation by public display, etc) under Chapter VI (Anticipation) of the Patents Act, 1970 ⦂―

❝An invention claimed in a complete specification shall not be deemed to have been anticipated by reason only of—

 (a) the display of the invention with the consent of the true and first inventor or a person deriving title from him at an industrial or other exhibition to which the provisions of this section have been extended by the Central Government by notification in the Official Gazette, or the use thereof with his consent for the purpose of such an exhibition in the place where it is held; or

 (b) the publication of any description of the invention in consequence of the display or use of the invention at any such exhibition as aforesaid; or

 (c) the use of the invention, after it has been displayed or used at any such exhibition as aforesaid and during the period of the exhibition, by any person without the consent of the true and first inventor or a person deriving title from him; or

 (d) the description of the invention in a paper read by the true and first inventor before a learned society or published with his consent in the transactions of such a society,

if the application for the patent is made by the true and first inventor or a person deriving title from him not later than twelve months after the opening of the exhibition or the reading or publication of the paper, as the case may be.❞




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Notes:

The Patents Act, 1970 was amended by :
- the Patents (Amendment) Act, 1999 (No. 17 of 1999);
- the Patents (Amendment) Act, 2002 (No. 38 of 2002);
- the Patents (Amendment) Act, 2005 (No. 15 of 2005).

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