PTAB cannot cancel claims as indefinite, Fed Circuit says
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The US Patent and Trademark Office (USPTO) has clarified the way in which the Patent Trial and Appeal Board (PTAB) should approach the issue of indefiniteness in post-grant proceedings, aligning the PTAB’s approach with that of the courts.
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US Patent and Trademark Office, Patent Trial and Appeal Board, indefiniteness, claim construction, patent invalidation, post-grant proceedings, Re Packard