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Assignor estoppel (view source)

Revision as of 19:43, November 22, 2018

686 bytes added ,  19:43, November 22, 2018
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'''Assignor estoppel''' is the patent law doctrine that an assignor of a patent is estopped, or barred, from later contesting the validity of the patent. The logic behind this doctrine is that by assigning the patent, the patent-holder accepted its validity, and cannot contradict himself on that point later.

The [[America Invents Act]] abrogated this doctrine for ''[[inter partes]]'' proceedings,<ref>https://www.patentspostgrant.com/equitable-defenses-ptab/?utm_source=Mondaq&utm_medium=syndication&utm_campaign=View-Original</ref> however, which further undermines the validity of patents like much of what the AIA has done.
== References ==
<references/>
[[category:Patent Law]]
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