To answer your question, it's not new news so it's not going to do much.

This was officially announced previously in a Feb 16 PTSC press release.

CARLSBAD, Calif., Feb. 16, 2011 /PRNewswire/ -- Patriot Scientific Corporation (OTC Bulletin Board: PTSC), today announced the latest in a remarkable string of successes in defeating the nearly four-year-old serial attack on the MMP Portfolio. The United States Patent and Trademark Office (USPTO) has issued a Reexamination Certificate for the US'890 patent, and a Notice of Intent to Issue Reexamination Certificate for the US'749 patent.