Atty. Daniel Roberto O'Neill

Atty. Daniel Roberto O'Neill

Daniel Roberto O'Neill is a lawyer practicing business law. Daniel received a B.A. degree from University of California in 2004, and has been licensed for 17 years.

Los Angeles Los Angeles 17 yrs experience 17 year
Call (213) 204-8606 Book Appointment

Profile Summary

About Daniel Roberto O'Neill at a glance

Daniel Roberto O'Neill is an Associate based in Los Angeles, California, practicing at Sidley Austin LLP. They have 17+ years of legal experience, licensed to practice since 2009. Their practice focuses on business. Admitted to practice in California (2009). Educated at Harvard Law School (J.D., 2008) and University of California (B.A., 2004). Serands clients in Los Angeles, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Daniel Roberto O'Neill is a lawyer practicing business law
  • Daniel received a B.A. degree from University of California in 2004, and has been licensed for 17 years
  • Daniel practices at Sidley Austin LLP in Los Angeles, CA

Practice Areas Explained

Daniel Roberto O'Neill's Areas of Practice

Each practice area below reflects the types of cases Daniel Roberto O'Neill handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Daniel Roberto O'Neill is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Los Angeles are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Los Angeles or all attorneys in California.

Frequently Asked

Common questions about Daniel Roberto O'Neill

Where is Daniel Roberto O'Neill's law office located?
Daniel Roberto O'Neill's law practice is located in Los Angeles, California. The firm is Sidley Austin LLP. You can contact the office directly through this profile page.
What practice areas does Daniel Roberto O'Neill handle?
Daniel Roberto O'Neill focuses on business. Each practice area listed reflects experience handling cases of that type in California.
How long has Daniel Roberto O'Neill practiced law?
Daniel Roberto O'Neill has 17+ years of legal experience and has been licensed since 2009.
Where did Daniel Roberto O'Neill go to law school?
Daniel Roberto O'Neill earned their education at (J.D., 2008); (B.A., 2004).
How can I contact Daniel Roberto O'Neill for a consultation?
You can contact Daniel Roberto O'Neill directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Practice Areas

Education

J.D.
Harvard Law School
- 2008
B.A.
University of California
- 2004

Bar Admissions

California
Admitted: 2009

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