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William K. Conkin

Of Counsel
2000 Market Street, Suite 2300
Philadelphia, PA 19103
(215) 575-2761
(215) 575-0856 - Fax

Bill devotes much of his practice to the defense of insurance bad faith litigation and insurance coverage matters. He is also engaged in appellate cases in the state and federal systems. Several of his appellate cases have resulted in published opinions involving various insurance coverage matters. As well, he has presented several seminars and classes concerning insurance bad faith and coverage issues.
Bill began his work as a lawyer in Houston, Texas, in 1986 where he maintained a general civil practice in his firm Bartley, Johnson & Conkin. He ultimately concentrated his practice on the then developing law of insurance bad faith. 

Significant Representative Matters

  • Defended insurer in bad faith and breach of contract suit based on commercial insurance policy and claim that co-insurance penalty provision should not apply to large warehouse fire claim. Obtained dismissal of bad faith count and claim for punitive damages at the close of plaintiff's case in trial in Philadelphia Court of Common Pleas.

  • Defended insurer in bad faith and breach of contract suit based on commercial insurance policy claim for "flood damage" to electrical products. Obtained summary judgment on both the bad faith and breach of contract claim.

  • Defended insurer on breach of contract and bad faith claim arising under a commercial insurance policy. Obtained affirmation from Third Circuit Court of Appeals of trial court's dismissal of both the bad faith and breach of contract claims.

  • Defended insurer on commercial insurance policy claim for property damage and bad faith. At end of trial, obtained a defense verdict on both the bad faith and property damage claim. Successful Pennsylvania Superior Court appeals on various insurance coverage issues.

  • Successful Texas Supreme Court appeal regarding improper service of process.

Published Works

  • "Growth of Mold Litigation & Insurance Agent Liability," Co-Author with Philip B. Toran, Agents of America, eBook Chapter, January 2010

  • "Scope of Attorney-Client Privilege in First Party Cases," seminar material for Insurance Bad Faith Claims, January 30, 2008

  • "Experts In Bad Faith Cases," seminar material for Insurance Bad Faith Claims, January 30, 2008

  • "Superior Court Limits Expert Testimony In Insurance Bad Faith Cases," Pennsylvania Law Weekly, May 29, 2000

  • "Expert Testimony in Insurance Bad Faith Cases Limited," Defense Digest, Apr. Vol. 6, No. 2, 2000

  • "Doctor's Negligent Exposure of his Sexual Perversion to Patient Does Not Constitute Professional Health Care Services & Not Covered by Professional Liability Policy," Defense Digest, Vol. 5, No. 4, 1999

  • "Appraising Loss Under Homeowners Insurance Policies," (co-author with Howard P. Dwoskin, Esq.), For The Defense, April 1999

  • "Limiting the Exhaustion of Limits Clause," Defense Digest, August 1995

Classes/Seminars Taught

  • Ethical Claim Negotiations, CEU Institute, Parsippany, NJ, January 2014

  • Insurance Bad Faith - January 2008 (among others) Insurance Coverage Issues - multiple occasions


  • South Texas College of Law, Houston, TX (J.D., 1985)

  • Indiana University Bloomington, Bloomington, IN (B.S., 1972)

October 2, 2018
Class Action & The Marshall Dennehey Horns, the in-house rock-and-roll band at Marshall Dennehey Warner Coleman & Goggin, will compete at the 3rd Annual Law Rocks Philadelphia event on October 18 at the World Café Live to raise money for the Philadelphia Bar Foundation. Law Rocks is a...
August 16, 2013
"Class Action," the in-house rock and roll band at Marshall Dennehey Warner Coleman & Goggin, will perform in the final round of the 13th Annual Fortune Battle of the Corporate Bands competition, to take place September 28th at the Rock and Roll Hall of Fame and Museum in Cleveland, Ohio. After...


  • South Texas College of Law (J.D., 1985)
  • Indiana University Bloomington (B.S., 1972)

Bar Admissions

  • Texas, 1986
  • Pennsylvania, 1995

Associations & Memberships

  • Pennsylvania Bar Association
  • Texas State Bar

Honors & Awards

Year Joined Organization: 1995

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