After graduating from the University of Pittsburgh School of Law, John Cook was admitted into the Pennsylvania Bar in 1967 while serving in the United States Marine Corps. John began his law career in the public service sector, working for a poverty law organization, Neighborhood Legal Services Association. In a short time, John moved from staff attorney, to managing attorney. He would later become a long-serving member of the NLSA Board of Directors including a two-year tenure as President of the organization.

In 1970 John opened his own private practice in downtown Pittsburgh, Stone, Duffy, Israel & Cook. While working in this practice, John also began to work part-time as an Assistant Public Defender where he eventually became the Homicide Division Chief Attorney. His work essentially consisted of death penalty cases, where he successfully prevented every client he worked with from being sentenced to death.

In 1982, John moved his private practice to the North Hills to its current location. It wasn't until 1986 that John left the Public Defender's Office to devote himself fully to this private practice.

John taught criminology for Indiana University of Pennsylvania in a consortium arrangement at the Butler County Community College and was a member of the Public Service Committee of the Allegheny County Bar Association. John is a member in good standing of the Allegheny County, Pennsylvania, and American Bar Association. He is admitted to practice before all courts of the Commonwealth of Pennsylvania, The United States District Court for the Western District of Pennsylvania, the United States Court of Appeals for the Third Circuit, and the Supreme Court of the United States.

John has many years of experience in the trust and estate, family law, civil litigation, and business law fields. He looks forward to assisting you with any legal challenges you may have.