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
Are you Peter Ivan Ostroff?
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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
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Appellate
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Business
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Class Action
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Discrimination
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Employment
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International
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IP
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Litigation
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Trade Secrets
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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.
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.
Read all reviewsHiring 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.
- Los Angeles39,975 attorneys
- San Francisco26,380 attorneys
- San Diego16,903 attorneys
- Sacramento10,561 attorneys
- Irvine6,831 attorneys
- Oakland5,709 attorneys
- San Jose5,009 attorneys
- Palo Alto4,084 attorneys
- Beverly Hills3,348 attorneys
- Newport Beach3,106 attorneys
- Pasadena2,894 attorneys
- Santa Monica2,756 attorneys
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