Fish & Richardson P.C. | 24,900 followers on LinkedIn. As the leading intellectual property law firm, we help innovators change the world through our unmatched litigation, prosecution, and post-grant experience across venues and prosecution needs. We touch more PTAB cases, IP appeals, and utility patents than anyone else, and no national firm handles more District Court patent cases. Many of our 425+ attorneys and technology specialists are also scientists who are as comfortable in a lab or cleanroom as a courtroom or patent office.