Law Office of John D. Cline

As of May 9, 2026

The Law Office of John D. Cline is the practice of attorney John D. Cline, who operates from offices in San Francisco, California, and Seattle, Washington. Publicly available information and professional directories identify the firm's legal practice as overwhelmingly focused on criminal defense, particularly white-collar crime, federal criminal matters, and appellate cases. The principal attorney, John D. Cline, has a long-standing reputation in the field of criminal law, with a practice spanning several decades and appearances in federal and state courts nationwide.

The firm is not an intellectual property boutique and does not present itself as having a dedicated patent litigation practice. Its single tracked appearance in a patent case was as local counsel for the plaintiff, Ironburg Inventions Ltd., in its litigation against Valve Corporation. This role is noted in court dockets but does not appear to be representative of the firm's core practice.

There is no publicly available information to suggest the firm has a specialty in any particular technology area, a preference for plaintiff or defendant-side work in patent disputes, or a practice before the Patent Trial and Appeal Board (PTAB). The firm's website and professional listings emphasize Mr. Cline's extensive experience in handling complex criminal proceedings, from trial through appeal, including matters involving fraud, national security offenses, and constitutional law. The involvement in the Ironburg v. Valve matter appears to be an outlier from the firm's central focus on criminal defense.