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Tom Irving has some 48 years of experience in intellectual property law. His U.S. pharma practice includes America Invents Act (AIA) post-grant proceedings, due diligence, counseling, patent prosecution, reissue, and reexamination. In addition to advising on procuring strong U.S. patents, Tom counsels clients on a wide range of mainly pharmaceutical matters, including pre-litigation, Orange Book listings of patents covering FDA-approved drugs, infringement issues, enforceability, supplemental examination, and validity analysis, including Obviousness-Type Double Patenting and Safe Harbor protection under 35 U.S.C. section 121.. He has served as lead counsel in numerous patent interferences, reissues, and reexaminations; as lead counsel in numerous AIA post-grant proceedings; and as an expert witness in patent litigation and patent procurement.