showing that an invention is not deserving of patent protection by providing evidence that it is not new, not useful, or is obvious There are two venues for invalidating a patent: patent reexaminations before the Patent and Trademark Office (PTO) and patent infringement lawsuits before the courts
refuting or degrading or discrediting or denying something someone else considers to be fact
If something invalidates something such as a law, contract, or election, it causes it to be considered illegal. An official decree invalidated the vote in the capital
take away the legal force of or render ineffective; "invalidateas a contract" show to be invalid declare invalid; "The contract was annulled"; "void a plea
To invalidate something such as an argument, conclusion, or result means to prove that it is wrong or cause it to be wrong. Any form of physical activity will invalidate the results
To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to invalidate an agreement or argument