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Peter Ivan Ostroff, ADR Attorney in Los Angeles, California

Over 59 years of legal practice · focused on ADR, Appellate, and Business · 5.0/5 rating from 1 verified client review

PartneratSidley Austin LLP

Los Angeles, CA

Practicing adr in Los Angeles since 1967.

59+
Years practicing
5.0 ★
1 client review
2
Bar admissions

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Quick answer

Peter Ivan Ostroff is a partner based in Los Angeles, CA. The practice focuses on ADR, Appellate, and Business. Peter has over 59 years of legal experience. Currently practicing at Sidley Austin LLP. Rated 5.0 out of 5 from 1 client review.

Based in
Los Angeles, CA
Experience
over 59 years
Known for
ADR · Appellate · Business
  • Handles ADR, Appellate, and Business matters from Los Angeles, CA.
  • Over 59 years of practice as a licensed attorney.
  • Recognized with AV Preeminent.

About Peter Ivan Ostroff: Peter Ivan Ostroff is a partner based in Los Angeles, CA. The practice focuses on ADR, Appellate, and Business. Peter has over 59 years of legal experience. Currently practicing at Sidley Austin LLP. Rated 5.0 out of 5 from 1 client review.

Areas of practice

Legal matters Peter takes on

Peter concentrates on adr, appellate, business, class action, and discrimination. Each area below outlines the kind of case Peter handles, typical outcomes to expect, and how the intake process starts.

ADR cases in Los Angeles, California

Peter takes adr matters in Los Angeles, 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 Peter agrees to represent you.

Appellate cases in Los Angeles, California

Peter takes appellate matters in Los Angeles, 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 Peter agrees to represent you.

Business cases in Los Angeles, California

Peter takes business matters in Los Angeles, 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 Peter agrees to represent you.

Class Action cases in Los Angeles, California

Peter takes class action matters in Los Angeles, 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 Peter agrees to represent you.

Discrimination cases in Los Angeles, California

Peter takes discrimination matters in Los Angeles, 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 Peter agrees to represent you.

Biography

Meet Peter Ivan Ostroff — adr lawyer in Los Angeles

Peter Ivan Ostroff is a partner based in Los Angeles, CA. The practice focuses on ADR, Appellate, and Business. Peter has over 59 years of legal experience. Currently practicing at Sidley Austin LLP. Rated 5.0 out of 5 from 1 client review.

Peter Ivan Ostroff is a lawyer practicing complex commercial litigation, international arbitration (commercial and treaty), trade secret and unfair competition litigation and 6 other areas of law. Peter received a B.A. degree from Washington University in 1964, and has been licensed for 59 years. Peter practices at Sidley Austin LLP in Los Angeles, CA.

Working with Peter on a adr matter

Peter Ivan Ostroff is a lawyer practicing complex commercial litigation, international arbitration (commercial and treaty), trade secret and unfair competition litigation and 6 other areas of law. Peter received a B.A. degree from Washington University in 1964, and has been licensed for 59 years. Peter practices at Sidley Austin LLP in Los Angeles, CA.

Who Peter represents

Peter reviews new inquiries case-by-case for adr, appellate, and business matters in Los Angeles and the surrounding California area.

Credentials

Education, bar admissions, and languages

  • The University of Chicago Law School

    J.D. · 1967

  • Washington University

    B.A. · 1964

Jurisdictions

Peter's state bar admissions

  • California

    1970 · ACTIVE

  • Illinois

    1967 · ACTIVE

Peter studied at J.D. in The University of Chicago Law School and B.A. in Washington University.

Law school and academic background

Peter completed J.D. in The University of Chicago Law School and B.A. in Washington University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Peter runs in California is where that training gets applied to real client questions.

Recognition

Recognition and thought leadership

Peter has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • AV Preeminent

Legal awards and honors

AV Preeminent.

Locations

Peter Ivan Ostroff's office in Los Angeles

Peter's primary office is at 555 W. 5th St., Los Angeles, CA, 90013. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Sidley Austin LLP

555 W. 5th St.

Los Angeles, CA 90013

Open in Google Maps

Client feedback

Client reviews of Peter Ivan Ostroff — 5.0/5 rating from 1 verified client review

Every review below is from a verified client of Peter. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing adr attorneys in Los Angeles.

5.0

1 client review

Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Peter Ivan Ostroff claims this profile.

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Hiring guide

How to hire Peter Ivan Ostroff — what to expect in your first consultation

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

Consultation formats and pricing

Peter charges for the initial consult. That fee is credited toward representation if you retain Peter'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; Peter will tell you what matters and what doesn't.

Questions to ask a adr attorney in Los Angeles, California

A short list to run through before you commit: How many adr 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 Peter

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

Hourly rates, contingency fees, and flat-fee options

Every adr 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. Peter confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

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

Frequently asked

Frequently asked questions about Peter Ivan Ostroff

  • How much does it cost to hire Peter for a adr case?

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

  • Does Peter offer a free consultation?

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

  • How long do adr cases in California typically take?

    Simple adr 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. Peter gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Peter take my case if I'm outside Los Angeles?

    Peter 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 — Peter 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 Peter?

    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. Peter will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Peter accepting new adr clients right now?

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

Areas served

ADR attorneys serving Los Angeles, San Francisco and San Diego in California

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

More counsel

If Peter's intake is full or the fit isn't right, these adr attorneys in Los Angeles handle similar matters. Every profile below is verified and open to consultations.