Caplin & Drysdale | 2,602 followers on LinkedIn. For over half a century, Caplin & Drysdale has been a leading provider of a full range of tax, tax controversy, and litigation legal services to companies, organizations, and individuals throughout the United States and around the world. In addition to being routinely recognized in top rankings such as Chambers, Best Lawyers, and Legal 500, our ranks include senior staff from the Internal Revenue Service, the U.S. Treasury, and the Justice Department.