The Patent Troll Tracker has released a new compilation of patent litigation statistics for January 2008. [LINK] PTT continues to find that most patent law suits (74%) are filed by companies who manufacture or sell an associated product. However, because non-practising entities tend to sue multiple defendants only slightly more than half (58%) of defendants are sued by a practising entity. As usual, the non-practising entities overwhelmingly filed suit in the Eastern District of Texas. Patent veteran Sorensen Research (interest holder of Jens Sorensen) was the most prolific filer in January — filing 9 patent cases against 13 total defendants. (3 more have been filed in February as well).
Read PTT’s Article.