Doctrine Of Equivalence
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Doctrine Of Equivalence
The doctrine of equivalents is a legal rule in many (but not all) of the world's patent systems that allows a court to hold a party liable for patent infringement if the infringing device or process does not fall within the literal scope of a claim (patent), patent claim but is nevertheless equivalent to the claimed invention. In the United States, Judge Learned Hand has described its purpose as being "to temper unsparing logic and prevent an infringer from stealing the benefit of the invention." Standards for determining equivalents Germany German courts typically apply a three-step test known as Schneidmesser's questions: #Does the variant solve the problem underlying the invention with means that objectively have the same effect? #Would the person skilled in the art, using the common general knowledge, have realised at the Priority priority date that the variant has the same effect? #Are the considerations which the skilled person takes into account for the variant in the ligh ...
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Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an sufficiency of disclosure, enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private la ...
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