Sonoma County Law Firm (707) 528-2882     Marin County Law Firm (415) 762-1653

William Arnone, Partner in Santa Rosa, CA

Bill started his career with a boutique high tech law firm in Palo Alto, California.

There he sharpened his litigation skills representing leading technology firms in intellectual property disputes.

In 1987, Bill and his wife, Deneene, saw the greener grass of Sonoma County, and decided it was the perfect place to raise a family.

Since then, he has broadened his practice areas to include business counseling and the representation of public entities.

Bill and his wife still enjoy hiking the byways of Sonoma County and beyond.

Racquetball and Bocce Ball are also among Bill’s favorite pastimes.

Bar Admissions:

  • 1979, California and U.S. District Court, Northern District of California
  • 1986, U.S. Tax Court
  • 1990, U.S. District Court, Eastern District of California, and U.S. Court of Appeals, 9th Circuit
  • 1992, U.S. Supreme Court
  • 1994, U.S. District Court, Central District of California
  • 2001, U.S. Court of International Trade
  • 2006, U.S. Court of Appeals, Federal Circuit


“The Extent of State Ownership of Submerged Lands of California,”
31 Hastings Law Journal 329, 1979.

Contributing Author:

“Protection of Technology,” California Continuing Education of the Bar, Advanced Business Law Series, Program Materials for January 1983.

Reported Cases:

  • Mizirawi v. Holl (1982) 135 Cal.App.3d 322
  • University Fin. Consultants v. Barouche (1983) 148 Cal.App.3d 1165
  • Mosher v. Commissioner (1987) T.C. Memo 1987-231
  • Mosher v. Mayacamas Corp. (1989) 215 Cal.App.3d 1
  • Rice v. Dean Witter Reynolds, Inc. (1991) 235 Cal.App.3d 1016
  • Hartman v. City of Petaluma (1994) 841 F. Supp. 946
  • In re Ankeny (1995) 184 Bankr. 64
  • STX, Inc. v. Bauer USA, Inc. (1997) 43 USPQ2d 1492
  • Traffic School Online, Inc. v. Superior Court (2003) 89 Cal.App.4th 222
  • El Encanto, Inc. v. La Tortilla Factory, Inc. (2005) TTAB Opp. No. 91159343
  • Garcia v. Coleman (2008) 2008 U.S. Dist. LEXIS 68672

Community Outreach:

Bill enjoys active involvement in a number of community organizations. His membership in those organizations usually involves leadership roles. Please explore the links below to learn more about the organizations that Bill supports.

Volunteer Work:


  • Phi Delta Phi
  • Sonoma County and American Bar Associations
  • State Bar of California (Member, Sections on: Litigation; Intellectual Property Law)


  • J.D., University of California, Hastings College of Law, 1979
  • B.A., University of California, Davis, 1976
  • Oxford University Special Studies, 1978