Reexamination Proceeding
Definition:
At any time during the enforceability of a patent any person may file a request for the USPTO to conduct a second examination of any claim of the patent on the basis of prior art patents or printed publications.
Classification
Definition:
Patents are classified (organized) in the U.S. by a system using a 3 digit class and a 3 digit subclass to describe every similar grouping of patent art.
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