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Frivolous Inventions and Claims Contrary to Natural Laws

Can a perpetual motion machine, or any frivolous invention, be patented in India?

Under section 3(a), any invention which is frivolous or which claims anything obviously contrary to well established natural laws is not patentable.

Doctrine last updated on 10 October 2026

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Frivolous Inventions and Claims Contrary to Natural Laws, Ali on Patents, www.aop.onl/frivolous-inventions

1Any invention which is frivolous or which claims anything obviously contrary to well established natural laws is not patentable. A patent will not be granted if it claimed a perpetual motion machine as it contravenes the laws of physics. (T5/86 Newman/Perpetual Motion [1988] EPOR 301 (Tech Bd App).) A patent involving a revolutionary concept will not be entertained if the person of average skill in the art would not be able to fill in the missing details from his own knowledge or following reasonable trial and error. A patent for an improved plan for subterranean utility distribution whereby housing estates are provided with supplies of gas, electricity and water and sewage disposal facilities was held not patentable as the same was considered mischievous to the state by being generally inconvenient. (Hiller’s Application (1969) RPC 267, p 268 applying Rolls-Royce Ltd’s Application (1963) RPC 255.)

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See also

Doctrine page

Public Order and Morality

Can an invention be refused a patent in India because it is dangerous or immoral?

Doctrine page

Industrial Application and 'Manner of Manufacture'

Is a 'manner of manufacture' automatically capable of industrial application?

Doctrine page · Written by Prof. Feroz Ali

www.aop.onl/frivolous-inventions