Dianne L. Sweeney

4.6 (40 reviews )

Palo Alto California United States

Commercial Litigation

Recognized in Best Attorney USA since 2022

650-233-4500 Website

About Dianne

Dianne L. Sweeney: Top Attorney in Commercial Litigation Practice Area

Dianne L. Sweeney is a top attorney recognized by Best Attorney USA in the practice area of Commercial Litigation. She practices law in Palo Alto, California, and has been recognized since 2022 based on an exhaustive peer-review survey that reflects her high esteem among other top lawyers in the same geographic and legal practice area.

Practice Areas

Commercial Litigation

Awards

Recognized: Commercial Litigation, Practice Area: Litigation and Controversy - Tax, Recognized Since: 2022

Firms

Pillsbury, Current Law Firm

Affiliations

Recognized in Best Attorney USA since 2022

Location: City: Palo Alto
State: California
Country: United States

Education & Credentials

Universities: Santa Clara University, Graduated with Honors in Juris Doctorate (J.D.)
- Drafted and argued several landmark cases for the Supreme Court of California. Served as a legal advisor to numerous start-up businesses.

Bar Admissions

California, United States (2018)
Certified in Federal Court Practice (2015)

Languages:

English - Primary Language
Spanish - Fluent for immigration and international clients.

Practice Areas

Commercial Litigation

Education

Santa Clara University

Awards & Recognition

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Reviews

4.6 / 5

40 Reviews

1,059 Profile Views

Marguerite Huel

Jan 27, 2026

Simply amazing representation from Dianne L. Sweeney's office during my recent legal matter

Honestly, I can't thank Dianne L. Sweeney enough for everything they've done for me. They really know their stuff when it comes to Commercial Litigation law and it shows in the results. 10/10 would re...

Anna Zemlak

Jan 27, 2026

Top notch experts in Palo Alto - Dianne L. Sweeney is by far the best lawyer I've ever had

Dianne L. Sweeney is fantastic and very professional. Don't hesitate to hire them if you're in California and need help. They really know their stuff and will go the extra mile to make sure you're tak...

Elaine Stehr

Jan 27, 2026

Absolutely Great! I couldn't be happier with the service from Dianne L. Sweeney

Best lawyer for Commercial Litigation law in Palo Alto. Period. I've seen others, but Dianne L. Sweeney is on another level. They truly care about their clients and work hard to get the best results....

Nellie Nitzsche

Jan 27, 2026

The absolute best in Palo Alto for Commercial Litigation law - and I mean that from the bottom of my heart

Short and sweet: Dianne L. Sweeney is the real deal and a true professional in the field of Commercial Litigation law. If you're in Palo Alto and need help with your legal issues, call them immediatel...

Dixie Reynolds

Jan 27, 2026

So glad I called Dianne L. Sweeney to handle my Commercial Litigation law case in Palo Alto

Dianne L. Sweeney has been doing this since Recognized in Best Lawyers since 2022, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my lega...