W. Patrick Sullivan
About W. Patrick Sullivan
W. Patrick Sullivan is a lawyer based in Mequon, WI and has been recognized in The Best Lawyers in America® since 2013. W. Patrick Sullivan is recognized in the following practice area:
- Mequon, Wisconsin
- Professional Malpractice Law - Defendants
Current Firm: Siesennop & Sullivan LLP
Education: Marquette University, J.D., graduated 1984
Location: Mequon, WI
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Leila Sahar is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Leila, who practices law in Milwaukee, Wisconsin, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Leila is held by other top lawyers in the same geographic and legal practice area.
Stacy Luell is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance. Stacy, who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stacy is held by other top lawyers in the same geographic and legal practice area.
Jennifer L. Ciralsky is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Jennifer L., who practices law in Milwaukee, Wisconsin, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer L. is held by other top lawyers in the same geographic and legal practice area.
Timothy P. Reardon is a business lawyer working with a wide array of companies—global, national and regional—in a variety of industries, including manufacturing, construction, service, distribution, health care, real estate and professional associations. Business clients value Tim as a trusted advisor and legal strategist who draws on his vast knowledge and experience base to provide creative, cost-effective solutions for a wide array of complex business and legal issues. Tim is a...
Doug Dehler is a shareholder with the law firm of O’Neil, Cannon, Hollman, DeJong & Laing S.C., where he leads the firm’s Class Action and False Claims Act practice group. Mr. Dehler’s practice focuses primarily on high-stakes, complex litigation, including class action lawsuits and whistleblower (qui tam) cases. Mr. Dehler also represents healthcare providers and business clients in insurance matters, including disputes with health insurance companies and managed care p...
Joseph A. Kromholz is one of the founding shareholders of Ryan Kromholz & Manion, S.C., located in Brookfield, Wisconsin. The firm, which traces its roots back to 1873, was formed in 1998 and practices in all areas of intellectual property law including related litigation. Mr. Kromholz is registered to practice before the United States Patent and Trademark Office and admitted to practice in the United States District Court for the Eastern and Western Districts of Wisconsin and before seve...
Steve Botzau is the managing attorney in the firm’s Racine and Kenosha offices. He was certified as a civil trial specialist in 1997 by the National Board of Trial Advocacy and was recently selected for exclusive membership in the American Board of Trial Advocates. Steve has completed over 100 civil jury trials. Steve has been recognized as a Super Lawyer since 2005. He has been among the top 50 attorneys in the State of Wisconsin since 2011, and has been among the top 25 attorneys in t...
Chris Smith is a Shareholder and co-Chair of the Real Estate Section at von Briesen & Roper, s.c. He focuses his practice on real estate development, eminent domain and property tax. He has significant experience in all phases of real estate development with a particular emphasis on drafting and negotiating development agreements, Tax Increment Financing (TIF) and public-private partnerships. He represents both public and private entities on eminent domain matters and property tax assessm...
John L. Schliesmann is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Tax Law. John L., who practices law in Milwaukee, Wisconsin, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John L. is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
UnitedHealth's Twin Legal Storms
by Bryan Driscoll
ERISA failures and shareholder fallout in the wake of a CEO’s death.