Hogan & Hartson | 1,814 followers on LinkedIn. www.hhlaw.com From our beginnings in 1904 as a single lawyer operation to our status as one of the top international law firms, Hogan & Hartson carries on a tradition of excellence established by our founder, Frank J. Hogan. As the economy and our clients’ businesses have globalized, so, too, has Hogan & Hartson.