WJ

William Joseph O'Brien, IP Attorney in Newport Beach, California

Over 45 years of legal practice · focused on IP, Litigation, and Real Estate

PartneratOne Llp

Newport Beach, CA

Practicing ip in Newport Beach since 1981.

45+
Years practicing
1
Bar admission

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Quick answer

William Joseph O'Brien is a partner based in Newport Beach, CA. The practice focuses on IP, Litigation, and Real Estate. William has over 45 years of legal experience. Currently practicing at One Llp.

Based in
Newport Beach, CA
Experience
over 45 years
Known for
IP · Litigation · Real Estate
  • Handles IP, Litigation, and Real Estate matters from Newport Beach, CA.
  • Over 45 years of practice as a licensed attorney.

About William Joseph O'Brien: William Joseph O'Brien is a partner based in Newport Beach, CA. The practice focuses on IP, Litigation, and Real Estate. William has over 45 years of legal experience. Currently practicing at One Llp.

Areas of practice

William's practice areas in Newport Beach

William concentrates on ip, litigation, and real estate. Each area below outlines the kind of case William handles, typical outcomes to expect, and how the intake process starts.

IP cases in Newport Beach, California

William takes ip matters in Newport Beach, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before William agrees to represent you.

Litigation cases in Newport Beach, California

William takes litigation matters in Newport Beach, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before William agrees to represent you.

Real Estate cases in Newport Beach, California

William takes real estate matters in Newport Beach, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before William agrees to represent you.

Biography

William Joseph O'Brien, ip attorney serving Newport Beach

William Joseph O'Brien is a partner based in Newport Beach, CA. The practice focuses on IP, Litigation, and Real Estate. William has over 45 years of legal experience. Currently practicing at One Llp. William works from Newport Beach, California and takes on ip matters across the region.

William Joseph O'Brien is a lawyer practicing litigation, intellectual property law. William received a A.B. degree from University of California, Davis in 1978, and has been licensed for 45 years. William practices at One LLP in Newport Beach, CA.

How William handles ip matters

William Joseph O'Brien is a lawyer practicing litigation, intellectual property law. William received a A.B. degree from University of California, Davis in 1978, and has been licensed for 45 years. William practices at One LLP in Newport Beach, CA.

The kind of cases William takes

William reviews new inquiries case-by-case for ip, litigation, and real estate matters in Newport Beach and the surrounding California area.

Credentials

Credentials — where William studied and practices

  • University of California, Boalt Hall School of Law

    J.D. · 1981

  • University of California, Davis

    A.B. · 1978

Jurisdictions

William's state bar admissions

  • California

    1981 · ACTIVE

William studied at J.D. in University of California, Boalt Hall School of Law and A.B. in University of California, Davis.

Law school and academic background

William completed J.D. in University of California, Boalt Hall School of Law and A.B. in University of California, Davis. Formal legal training is one signal of substantive knowledge — the day-to-day practice William runs in California is where that training gets applied to real client questions.

Affiliations

William's professional memberships and bar associations

  • Century City, Santa Monica and American Bar Associations State Bar of California Association of Business Trial Lawyers

    membership

Locations

William Joseph O'Brien's office in Newport Beach

William's primary office is at 23 Corporate Plaza, Suite 150, Newport Beach, CA, 92660. In-person meetings are by appointment; a phone intake usually comes first.

Main office

One Llp

23 Corporate Plaza, Suite 150

Newport Beach, CA 92660

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Client feedback

Client reviews of William Joseph O'Brien

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Hiring guide

How to hire William Joseph O'Brien — what to expect in your first consultation

Working with a new ip attorney should feel structured. Here's how the first two conversations with William usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

William charges for the initial consult. That fee is credited toward representation if you retain William's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; William will tell you what matters and what doesn't.

Questions to ask a ip attorney in Newport Beach, California

A short list to run through before you commit: How many ip matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for William

William discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in ip practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every ip matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. William confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

William's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many ip practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about William Joseph O'Brien

  • How much does it cost to hire William for a ip case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. William walks through the likely range during the consult so there are no surprises.

  • Does William offer a free consultation?

    William charges for the initial consult; that fee is credited toward representation if you retain William's office. Some ip attorneys offer free consults — check William's current terms during booking.

  • How long do ip cases in California typically take?

    Simple ip matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. William gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can William take my case if I'm outside Newport Beach?

    William is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — William will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with William?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. William will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is William accepting new ip clients right now?

    William's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

IP attorneys serving Newport Beach, Los Angeles and San Francisco in California

William handles ip matters throughout California. Each city below is a direct link into the search page for verified ip attorneys in that community.

More counsel

If William's intake is full or the fit isn't right, these ip attorneys in Newport Beach handle similar matters. Every profile below is verified and open to consultations.