"he sees a 'not so good' handwriting on the wall and wanted to be clear and gone from the fallout of a negative Markman ruling."

The following from the news release
"Patriot Scientific Corporation (OTC Bulletin Board: PTSC - News) today announced that Chairman and CEO David H. Pohl has notified them of his intent to retire from the position of chief executive officer as soon as a new CEO is appointed. He will continue to serve as chairman of the board." clearly indicates that he will be the ceo of the company until they find a replacement. If he had seen the writing on the wall he would have retired immediately.