Uncover product information and strategies contained in patents with MAPIT, a patent data-mining service now being demonstrated over the Web by Manning & Napier Information Services. Large patent portfolios can be analyzed to identify similarities, differences, and relationships. Research results can highlight clusters of similar patents, or rank patents according to areas of interest. Interactive viewers provide side-by-side displays of data to support a detailed analysis for possible infringement. The online demonstration may be viewed at http://www.mnis.net/mapitdemo, or through a patent research service offered by IBM Corp. by following the "Resource Page" link at http://patent.wcomplex.ibm.com/respage.html. The IBM site contains more than 2 million patents.