Co-managing partner Phil Colburn has transformed Cantor Colburn into one of the nation’s leading intellectual property law firms. Phil leads a team of more than 110 attorneys, patent agents, and technical advisors who are committed to helping clients optimize their IP assets through the timely delivery of top quality, cost-effective legal services.
His counsel to Fortune 50 multinationals, as well as smaller companies and universities, is informed both by unique technical insights gained from his years of professional experience as a design engineer and by strategic perspectives derived from more than 20 years’ practice as an IP attorney. Taking a proactive, results-driven approach allows him to help clients define their needs and implement strategies that achieve their objectives. A frequent speaker on IP issues, Phil is an Adjunct Professor of Patent Law at Western New England College School of Law.
Ann is responsible for managing USAA’s growing patent portfolio, supporting Innovation and licensing efforts, and facilitating the integration of intellectual property across the enterprise.
Diane is Senior Managing Counsel for J. C. Penney Corporation, Inc., responsible for all patent litigation matters. Prior to joining J. C. Penney Corporation, Diane was a shareholder as Winstead PC in Dallas, Texas and a member of its Intellectual Property and Commercial Litigation Practice Groups. She practiced at Winstead for more than 25 years before leaving private practice to join JCPenney. During her tenure at Winstead, Diane represented clients that were patent owners, defendants accused of infringement by competitors, as well as clients accused of infringement by NPEs.
Mark A. Tidwell is a partner in the Intellectual Property Practice Group in the Houston office. He focuses his practice on prosecution, acquisition, licensing, divestiture and enforcement of patent rights, trademark rights, trade secrets and copyrights. Mark has filed and prosecuted hundreds of patent, trademark and copyright applications. He was honored in Intellectual Asset Magazine's Patent 1000: The World's Leading Patent Practitioners, Globe White Page Ltd, 2014 and 2016 for patent prosecution and IP transactions.
Walter C. Grollitsch has over 12 years of legal experience in advising international clients on legal matters, intellectual property strategies, patent law and patent portfolio management. For the last several years, Walter has worked as in-house counsel at Intervale Capital which owns over 10 portfolio companies in the oil and gas industry. He has advised the management at the portfolio companies on various legal matters and on strategic ways to create, defend and assert their intellectual property rights. Walter has been involved in several intellectual property disputes in the federal courts and in the United States Patent Office. He has negotiated numerous settlement agreements and cross-licensing agreements. Walter has an engineering degree from The Penn State University and a law degree from South Texas College of Law.
Thomas currently holds the position of Senior IP Counsel at Baker Hughes Inc. In this role, Thomas, a registered Patent Attorney, is responsible for the identification and protection of proprietary technologies and services developed and commercialized by Baker Hughes’s Artificial Lift and Intelligent Well Systems product lines. In his role, he handles patents, trademarks, and trade secrets related to the Artificial Lift and Intelligent Well Systems technologies, as well as contracts and litigation related to those technologies. Before becoming an attorney, Thomas worked as an engineer in the petrochemical field. He worked with Union Carbide’s Unipol™ Polyethylene and Unipol Polypropylene technologies during his career at Union Carbide. He also managed the Unipol Licensing Training Organization before attending law school in 1999. Thomas has a Bachelor of Science in Mechanical Engineering from Texas Tech University, and practiced as a Chemical and Mechanical Engineer in his career with Union Carbide. Thomas has a Juris Doctor degree from the University of Houston Law Center.
Phillip manages all intellectual property matters, with a focus on overseeing patent litigation, reviewing possible incidents of infringement, managing patent prosecution, and administering licensing issues. Additionally he provides guidance to company leadership in the form of legal opinions on Patentability, Validity of Competitor Patents, Freedom to Operate, Infringement, and Design-Around Strategies. Phillip leads employee education sessions and develops best practices, with the goal of creating and preserving the company's legal rights with respect to all intellectual property. He also drafts and reviews contracts, including agreements associated with business deals, licensing, non-disclosure, joint development and collaboration, master services, and the employment of technical personnel.
Counsel Roger H. Lee is a member of Buchanan Ingersoll & Rooney’s Intellectual Property Section. He focuses his practice on intellectual property law, with an emphasis on inter partes matters before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office. He has extensive experience before the PTAB and has successfully represented petitioners and patent owners in inter partes review (IPR) proceedings. Roger provides strategic counseling and opinions concerning validity, infringement, and freedom to operate. He helps clients navigate complex disputes involving multiple patents and parallel proceedings. He has conducted appeals before the Court of Appeals for the Federal Circuit.
Chris handles a diverse portfolio of technologies in the physical sciences. Having been cited in both the Legal 500 and the Guide to the World’s Leading Experts in Patent Law, Chris is frequently engaged by international clients seeking doggedness, experience and, above all, results, in strategic patent prosecution and opposition and appeal proceedings in the European Patent Office (EPO).
John has extensive experience working within the tech sector, with one of the largest IT and telecommunications opposition practices in Europe. He has successfully led some of the most high profile cases in this field before the EPO’s Boards of Appeal and Opposition Divisions. He routinely obtains valuable patents for a variety of software and IT businesses. Other areas of expertise are in the healthcare sector, particularly drug delivery systems and diagnostic devices. In these fields, John advises a range of companies, from start-ups to multinationals, on more general IP issues, including infringement and enforcement of patents and design rights, and licensing issues.