Patent Busting Statistic Update:  EFF responds to Acacia's boast that the chances of busting their '992 patent was "remote".  CNN initially reported that "only 614 of the nearly 7 million existing patents have been revoked, according to the U.S. Patent and Trademark Office. Some 3,927 patents have been narrowed since the agency began conducting re-examinations in 1981. The hardest part for challengers is qualifying for a re-exam at all."  However, statistics from the United States Patent and Trademark Office show that 90 percent of reexamination requests are granted.   They also show that 72 percent of granted requests result in either revocation or narrowing of patent claims.