Experienced Attorney Brian Johnston Joins Caldwell Cassady & Curry in Dallas Trial and appellate lawyer brings years of intellectual property expertise News provided by Share this article Share this article DALLAS, Jan. 26, 2021 /PRNewswire/ -- The Dallas-based intellectual property and business litigation firm Caldwell Cassady & Curry has added accomplished attorney Brian D. Johnston as a principal. He most recently was a partner in the intellectual property department at Baker Botts in Dallas. Mr. Johnston joins Caldwell Cassady & Curry with more than a decade of experience representing plaintiffs and defendants in a variety of high-profile intellectual property disputes. His track record includes extensive work in patent, trade secret, and copyright lawsuits in federal district courts across the country and on appeal in the Federal Circuit.