William L. Fillmore, Partner


More than 40 years experience in law

After receiving his Juris Doctorate at the University of Chicago, William L. Fillmore began his legal career in Denver, Colorado with the regional law firm of Holland & Hart, and subsequently joined the Logan, Utah law firm of Olson & Hoggan. He stepped out of private practice in 1986 to serve as Associate General Counsel for Brigham Young University.


In 1991, Bill opened the Utah County office for the Salt Lake City law firm of Van Cott, Bagley, Cornwall & McCarthy, serving as managing attorney for three years before forming his own firm in Provo in 1994, now known as Fillmore Spencer LLC, Utah County’s largest local law firm.


Mr. Fillmore has an “AV Preeminent” rating with Martindale-Hubbell, and has been voted among “Utah’s Legal Elite,” (Utah Business Magazine).


Corporate, Commercial and Business law

Bill engages in a general business law practice and handles a variety of purchase, sale and merger transactions, debt and equity financing transactions, technology licensing, and commercial real estate matters.

Our Address

Fillmore Spencer LLC

At Jamestown Square

3301 North University Avenue

Provo, Utah 84604

(801) 426-8200

Practice Areas

Look to Fillmore Spencer LLC for creative, cost-effective legal counsel and trial savvy

Fillmore Spencer LLC provides highly effective counsel and representation in business and commercial legal matters, while being mindful of the need to contain clients’ legal costs. Call Bill at (801) 426-8200 or fill out the form to see how he can help your enterprise resolve its most pressing legal issues.

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Bar Admissions

  • Colorado, 1976
  • U.S. District Court, District of Colorado, 1976
  • U.S. Supreme Court, 1978
  • U.S. Court of Appeals, 10th Circuit, 1978
  • Utah, 1980
  • U.S. District Court, District of Utah, 1980



  • White House Intern
  • Special Service Award (Utah Information Technology Association)
  • Voted among “Utah’s Legal Elite,” Utah Business magazine
  • Marquis Who’s Who in American Law and Who’s Who in the West




Professional Associations

  • U.S. Supreme Court Bar
  • Utah State Bar
  • Colorado Bar Association

Community Involvement

  • Chairman, Board of Trustees, Timpanogos Regional Hospital
  • Chairman, Board of Directors, Provo-Orem Chamber of Commerce
  • Member, Board of Governors, Utah Valley Chamber of Commerce
  • Member, Provo City Parks & Recreation Board
  • Chairman, Citizen Committee for Provo’s Public Safety Bond
  • Special Counsel and Board Member, Academy Square Foundation (restoration project)
  • General Counsel, America’s Freedom Festival at Provo (pro bono)
  • Member, Board of Directors, Brigham Young University Alumni Association
  • National President and Board Member, Brigham Young University Cougar Club
  • Member, Board of Directors, Provo School District Foundation for Excellence
  • Member, Thanksgiving Point Advisory Committee
  • Member, Business Advisory Council, Utah Valley University
  • Member, Provo City Parks & Recreation Board
  • Member, Strategic Advisory Council for the Boy Scout of America’s National Park Council
  • Co-Founder/Executive Committee Member, Utah Information Technology Summit
  • Lecturer, Marriott School of Management, Brigham Young University
  • Adjunct Professor, Brigham Young University School of Religion
  • Adjunct Professor, Utah State University Honors Program
  • Student Body president, Brigham Young University
  • Student Body Academic Vice President, Brigham Young University
  • Academic Vice President, Brigham Young University
  • White House Intern, 1973
  • Author, Once Upon a Christmas, Northwest Publishing
  • Contributor, Encyclopedia of Mormonism, Macmillan Publishing Company
  • Missionary for The Church of Jesus Christ of Latter-day Saints, Vienna, Austria

Fillmore Spencer LLC is located in Provo, Saint George, and Murray, UT, and services clients in Eagle Mountain, Highland, Lindon, Orem, Provo, Pleasant Grove, Saratoga Springs, Springville, Elberta, American Fork, Wallsburg, Alpine, Mapleton, Midway, Lehi, Spanish Fork, Cedar Valley, Draper, Heber City, Payson, Salem, Goshen, Sandy, Santaquin, Riverton, Duchesne County, Juab County, Sanpete County, Summit County, Utah County, Uintah County, Wasatch County and all of Utah.