OTPD - What does oTPD stand for? The Free Dictionary
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244) In effect, OTPD is a judicial end-run around the statute that makes the earlier patent available as pseudo-prior art, but with the critical caveat that only the claims of the earlier patent are to be considered, not the specification as a whole.
The challenge in performing the analysis for OTPD has been that it is conceptually very difficult to determine the obviousness of a claimed invention based on a comparison with an earlier claim.
The California Transplant Donor Network had the highest OTPD
in the US last year - 3.