Osha Bergman Watanabe & Burton, an intellectual property firm, filed a patent-infringement and trade secrets theft lawsuit on behalf of a Canadian firm with rights to high-tech oil drilling technology.

The Osha Bergman legal team for plaintiff Intelligent Wellhead Systems is comprised of Houston-based attorneys Tammy J. Terry, Califf T. Cooper, Lisa E. Margonis and Peter C. Schechter.