While prosecuting a patent application before the USPTO, you
receive a novelty or obviousness rejection in which the cited prior
art seems very familiar... because it is your own reference. Is
this proper? Can a US patent examiner use your own disclosures
against you? Like many legal questions, the answer is "it
depends."
When making a prior art rejection in the US, a patent examiner
distinguishes between prior art that is available under 35 U.S.C.
§ 102 (a)(1) and 35 U.S.C. § 102 (a)(2). Section 102 (a)
provides as follows:
A person shall be entitled to a patent unless—
(1) the claimed invention was patented, described in a printed
publication, or in public use, on sale, or otherwise available to
the public before the effective filing date of the claimed
invention; or