Written by: Mark Terry The Board of Patent Appeals and Interferences (BPAI) decision of Ex parte Yufa affirmed a Patent Examiner’s 35 U.S.C. 112, 1st paragraph, rejection. This was an interesting case for me, a Miami Patent Attorney, because it illustrated a type of rejection I don’t deal with much. The case of Ex parte Yufa involved an apparatus for detecting particles using beams of light. At issue was a claim element that did not appear to be present in the original specification. The Board found the disputed claim element did not have support in the initial disclosure and therefore the 35 U.S.C. 112, 1st