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Thaddeus J. Weaver

Partner; Wilmington Office Managing Attorney
Primary Office
One Customs House
704 N. King St., Suite 500
P.O. Box 1031
Wilmington, DE 19899-1031 (Deliveries 19801)
Direct(302) 571-8867
Fax(302) 571-8875


Elaine F. Serpe
Direct(302) 571-9800

The Managing Attorney of Dilworth’s Delaware Office, Thad Weaver’s practice includes representing corporations and individuals in litigation, both as principal counsel in cases venued in Delaware and Pennsylvania, and as “local counsel” assisting other law firms representing parties in the Delaware Court system.

Thad has significant experience assisting insurance companies as to their rights and duties, both during the claims-handling process, and in declaratory judgment and bad faith litigation. He has advised insurers and litigated insurance matters involving across a wide variety of claims scenarios, including but not limited to pollution, asbestos, mold, products liability, construction, and errors and omissions claims. He has also represented a variety of businesses in breach of contract and trade secret matters, and has advised and represented banks as to creditors’ rights issues.

Representative Experience

  • Represented insurance carrier in multi-million dollar four-month trial involving claims for coverage arising from asbestos respirator liabilities.
  • Secured injunction in favor of manufacturer seeking to enforce non-compete agreement against former employee, and recovered confidential customer list appropriated in violation of Delaware’s Trade Secrets Act.
  • Obtained dismissal of lawsuit on Rule 12(b)(6) motion in favor of insurance carrier against policyholder, based on warranty provision in insurance policy, resulting in a finding of no coverage for claim.
  • Successfully negotiated ownership dispute among members of family-owned close corporation, pursuant to the Delaware General Corporation Law, avoiding litigation or arbitration proceedings.
  • Obtained judgment in favor of insurance carrier that issued Errors and Omissions Policy to mortgage broker, finding no coverage for mortgage broker’s fraudulent conduct, and enforcing exclusions in insurance carrier’s favor.

Professional & Community Activities

  • Committee Member – Boy Scout Troop 88, St. Anthony’s Parish (Wilmington, DE)
  • Volunteer Attorney – Philadelphia VIP for Kids Program, 1996 – 1997 
  • Board Member – National Multiple Sclerosis Society, Delaware Chapter, 1992 – 1994

Professional Recognition

  • Phi Beta Kappa.
  • President, F.H.C. Society.
  • Recipient, William E. Fraley Award.
  • Recipient, Richard Lee Morton Scholarship.

News / Events


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Alternate Biographies





  • J.D., University of Pennsylvania Law School, 1988
  • B.A., with high honors, College of William and Mary, 1984

Bar Admissions

  • Delaware
  • Pennsylvania
  • United States District Court District of Delaware
  • United States District Court Eastern District of Pennsylvania
  • United States District Court Middle District of Pennsylvania
  • United States Court of Appeals Third Circuit