Skip to content William L. Coggshall

Lawyers

San Diego
101 W. Broadway
Suite 2000
San Diego, CA 92101


Carlsbad
5901 Priestly Drive
Suite 308
Carlsbad, CA 92008


Education

J.D., Marquette University Law School, 1999

  • Intellectual Property Law Review, Associate Editor, 1998-99

B.A., San Jose State University, 1995

Honors

Best Lawyers in America® distinction in Mass Tort Litigation / Class Actions - Defendants (2025)

Biography

William L. Coggshall, III is a Partner in the San Diego office of GRSM and is a member of the Environmental/Toxic Tort, Professional Liability and Construction practice groups. William epresents individuals and businesses ranging in size from small sole proprietorships to large international corporations. William is an experienced trial lawyer, handling cases involving professional liability claims (insurance agents and brokers, lawyers, accountants, design professionals), construction litigation (defect, contract, delay claims), and high-exposure toxic tort litigation. His clients include retailers, manufacturers, developers, general contractors and large infrastructure engineering companies. Additionally, he represents clients in all types of real estate disputes (including but not limited to: issues/claims related to easements, encroachments, landlord/tenant, landslides, all types of construction matters, failure to disclose, premises liability and water diversion facilities).

While recognizing trial is a last resort, William has proven himself to be a successful trial lawyer should cases go to that extent. His knowledge and skills have been much appreciated by his clients and respected by opposing counsel. Litigation is an expensive proposition and William's practice includes an active program of risk mitigation by routinely advising his clients regarding litigation/claims avoidance, contract negotiation, contract interpretation and review.

Structuring Business Solutions for Design Professionals

William represents some of the world’s largest infrastructure design companies. In addition to defending lawsuits, he is successful and often requested to represent clients asserting affirmative claims such as unpaid contractual fee claims and lost business profit claims.

Defense for High Exposure Claims

Another facet of William’s litigation practice involves complex litigation of product liability and toxic torts related to high-exposure asbestos/toxic exposure claims. He works with retailers, manufacturers and their insurers to aggressively defend claims of liability, reduce damages to nominal amounts and clear threats of future litigation.

Displaying a Marine’s Discipline in Protecting Clients

William credits his service in the United States Marine Corps for his deeply held belief in the power of preparation and how he builds the foundation of his litigation practice. He takes an aggressive yet real world approach in representing clients.

Admissions

  • California
  • Wisconsin (inactive)
  • U.S. District Court, Northern District of California
  • U.S. District Court, Western District of Wisconsin

Memberships

  • AIA – East Bay
  • Council on Litigation Management
  • Defense Research Institute
  • Contra Costa County Bar Association
  • Association of Defense Counsel
Experience
Publications & Presentations
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