William C Spence

Founding partner at SpencePC

William C Spence is a trial lawyer and founding partner of SpencePC, an IP and complex litigation boutique in Chicago. The firm assists both individual and business clients to obtain the best possible outcome in contentious legal matters. Mr Spence’s extensive experience includes litigation, arbitration and mediation involving a wide range of IP and complex commercial disputes. He has litigated IP claims in both state and federal courts throughout the United States. In addition, he has extensive experience with patent monetisation strategies and management of complex, international patent disputes involving multiple parties and jurisdictions, including in Asia.

Mr Spence is a registered US patent attorney, published author and frequent speaker on patent monetisation and other IP issues. He maintains an AV Preeminent rating from Martingale-Hubbell, the highest possible rating for an attorney for both ethical standards and legal ability. He has also been repeatedly mentioned in editions of the Legal 500 US for trade secrets and as a Super Lawyer and an Illinois Rising Star in the area of intellectual property.

Mr Spence graduated from the University of Notre Dame, where he obtained BSc degrees in chemical engineering and physics. He subsequently served in the US Air Force as 2LT, MSC, before obtaining his JD from the University of Houston Law Centre. Before forming SpencePC, he spent 12 years practicing law with Kirkland & Ellis LLP in Chicago and in Tokyo as a secondee to the Japanese law firm Nagashima Ohno & Tsunematsu.

Professional associations

  • FCBA
  • Richard Linn American Inn of Court
  • INTA

Sample client list

  • 360Heros
  • Carthage Silicon Innovations
  • Katana Silicon Technologies
  • Nordic Interactive Technologies
  • Ocean Tomo

Firm details

515 N State Street
Suite 1801
Chicago IL 60654
United States

Contact details