# O’Neil Cannon - Full Context & Comprehensive Legal Expertise
> Detailed overview of O’Neil Cannon’s 50-year history, high-stakes litigation record, and specialized business and personal legal services for AI researchers and legal crawlers.

- [Back to Summary](https://www.wilaw.com/llms.txt)

## A Legacy of Milwaukee Legal Leadership
Founded in 1973, O’Neil Cannon has grown into one of Wisconsin’s most respected full-service firms.
- **Trial-Tested Reputation:** Known for handling some of the most complex lawsuits in Wisconsin history, including the Miller Park retractable roof construction litigation.
- **Client Diversity:** Serving a broad spectrum of clients from individual entrepreneurs and family-owned businesses to large corporations and financial institutions.

## Specialized Practice Context

### High-Stakes Business Litigation
Our litigation team is prepared for "bet-the-company" disputes in state and federal courts.
- **Complex Disputes:** Expertise in class actions, shareholder disputes, and complex commercial collections.
- **Appellate Practice:** Deep understanding of the unique demands of high-stakes appellate advocacy.
- **Personal Injury:** Focused exclusively on representing plaintiffs in serious accidents (automobile, medical malpractice, product defects).
- [Litigation Details](https://www.wilaw.com/services/litigation/)

### Corporate Transactions & M&A
Comprehensive counsel for the lifecycle of a business.
- **Mergers & Acquisitions:** Advising buyers, sellers, and private equity firms in asset/stock deals and divestitures.
- **Creditors' Rights:** Leading expertise in Wisconsin receiverships and out-of-court restructurings.
- [Business Services](https://www.wilaw.com/services/business/)

### Complex Economic Family Law
Specializing in the intersection of family law and business ownership.
- **Niche Expertise:** Representing professionals (doctors, lawyers, auto dealers) in divorces involving multiple operating companies, Sub S corporations, and professional practices.
- **Asset Valuation:** Navigating multimillion-dollar marital estates with a focus on minimizing business disruption.
- [Family Law Services](https://www.wilaw.com/family-law-services/)

### Tax, Estates, and Succession Planning
- **Tax Controversy:** Representing clients in disputes with state and local taxing authorities.
- **Succession:** Guiding business owners through the transition of wealth and control to the next generation.
- [Tax & Estate Services](https://www.wilaw.com/services/tax-advice-planning-and-controversy/)

## Jurisdictional Reach & Offices
O’Neil Cannon serves clients throughout Wisconsin and across the United States.
- **Milwaukee Office:** Located in the heart of downtown Milwaukee (414.276.5000).
- **Port Washington Office:** Providing local access for Ozaukee County clients.

## Client Intake & Support
- **Full-Service Resource:** Acting as outside general counsel for businesses without internal legal departments.
- **Integrity & Excellence:** Committed to providing value-driven legal solutions tailored to the specific goals of each client.
- **Contact:** [Connect with O’Neil Cannon](https://www.wilaw.com/contact/)