Winchester Arbitration & Mediation Lawyers

James (Jim) Parke has practiced law in California for over 45 years. Jim graduated from California State University, Fullerton in 1975 and from Pepperdine University School of Law in 1978. An esteemed expert in all areas of family law, Jim has spoken on several family law-related topics throughout Southern California and regularly contributes to divorce recovery workshops. He has also written several articles related to family law. Jim understands the psychological aspect of family law and he knows the importance of helping a client pass through the dissolution process as quickly, painlessly, and fairly as possible. He is diligent, caring, and works...

Mr. Helm, a Phillips ADR neutral, has mediated disputes up to ten figures in securities, class actions, shareholder disputes, corporate transactions, mass torts, professional liability, land use, sexual misconduct, ERISA, and intellectual property. He serves on the PG&E bankruptcy mediator panel and studied mediation at the Straus Institute. Previously, he was on the U.S. District Court, Central District of California ADR panel. A panelist on the American Arbitration Association roster and Institute for Transnational Arbitration advisory board, Mr. Helm has arbitrated business and consumer disputes and advocated in complex arbitrations involving asset management, trade secrets, and international investments. Before Phillips ADR, Mr....

Clay joined Judge Phillips’ ADR practice in 2011. He graduated cum laude from Pepperdine University (B.A., History, 2006) and earned his J.D. from Fordham Law School (2011). He is admitted to the New York and California State Bars. Clay began mediating small claims in Bronx County Civil Court during law school. With over a decade at Phillips ADR, he now mediates complex disputes involving major companies in areas like antitrust, class actions, intellectual property, environmental, mass tort, insurance, securities, and contract disputes. He has worked on over 500 mediations, assisting Judge Phillips before, during, and after sessions, and directly engaging parties...

Layn R. Phillips, founder of Phillips ADR Enterprises (PADRE), is a former U.S. Attorney and U.S. District Judge. Appointed at age 35 by President Reagan, he presided over 140+ trials in Oklahoma, New Mexico, and Texas, and sat by designation on the Tenth Circuit Court of Appeals. Earlier, Judge Phillips served as an Assistant U.S. Attorney in Los Angeles, and at age 31, was nominated as U.S. Attorney for the Northern District of Oklahoma. After leaving the bench, he spent 23 years at Irell & Manella, focusing on complex civil litigation, internal investigations, and alternative dispute resolution. He later founded PADRE, specializing...

Margaret B. Seymour, a retired U.S. District Judge (District of South Carolina, 1998–2022), was the first African American woman federal judge and chief federal judge in South Carolina. She served as a U.S. Magistrate Judge (1996–1998) before her district court appointment. Over 26 years, Judge Seymour presided over complex securities, contract, class action, commercial, banking, bankruptcy, employment, discrimination, and environmental cases, as well as criminal matters like drug conspiracies, white-collar crime, and Ponzi schemes. She sat by designation on the Fourth Circuit and participated in two three-judge-panel redistricting cases. She served twice on the Judicial Conference Committee on the Administration of...

Chuck Stevens joined Phillips ADR after a 40-year career as a litigation partner at Gibson Dunn & Crutcher, U.S. Attorney, and neutral in ADR matters. At Gibson Dunn’s San Francisco office, he served as managing partner for six years and was recognized by Lawdragon (2023 Leading Global Litigators), Benchmark Litigation (2024 Litigation Star), and Chambers (Band 1, California Litigation). He was named San Francisco’s Lawyer of the Year for Bet-the-Company Litigation (2019) by Best Lawyers. Chuck founded a boutique litigation firm, handling complex civil cases and qui tam matters. As a neutral, he mediated for the Eastern District of California’s Voluntary...

Elliot Brown, a Phillips ADR neutral, is the former managing partner of Irell & Manella LLP. He spent nearly 30 years in IP litigation, counseling, and licensing at a top IP practice. Elliot graduated cum laude from Harvard College (1985), earning Phi Beta Kappa and a John Harvard Scholar award. He studied philosophy of science at Princeton, receiving an MA (1987) and a Mellon Fellowship, where game theory and Daniel Kahneman’s work on bargaining and cognitive bias shaped his approach to dispute resolution. He earned his J.D. magna cum laude from Harvard Law School (1990), serving as a Harvard Law Review...

Seth Aronson joined Phillips ADR in 2023, mediating disputes up to ten figures in securities, consumer class actions, privacy, false claims, shareholder derivative, antitrust, RMBS fraud, and complex litigation. He serves on the ADR panel for the U.S. District Court, Central District of California. Retiring from O’Melveny & Myers LLP in 2022 after 40 years as a trial and appellate lawyer, Seth was managing partner of O’Melveny’s Los Angeles office and chaired its Securities Litigation practice. Ranked by Chambers USA for 20 years, he was named California Securities Litigation Attorney of the Year twice by Benchmark Litigation, a “Top 100 Lawyer”...

Andra Greene, a Phillips ADR neutral, has mediated OR COMEDIATED disputes from seven to 11 figures in NUMEROUS AREAS INCLUDING mass torts, class actions, EMPLOYMENT, securities, sexual misconduct, insurance, and intellectual property. She spent 35 years at Irell & Manella LLP, leading the Class Action Defense practice and serving as managing partner of the Newport Beach office and on the Executive Committee. A seasoned trial lawyer, Andra handled complex litigation in class actions, professional liability, employment, business torts, securities, and intellectual property in state and federal courts. She often represented lawyers and law firms. Recognized as a “Top Woman Lawyer in...

Niki, a Phillips ADR neutral for six years, brings 25 years of experience in complex litigation, claims administration, mediation, arbitration, and special master roles. A protégé of Judge Layn Phillips, she has co-mediated hundreds of cases, applying his innovative practices in mediations she leads and in court-appointed special master roles nationwide. Before Phillips ADR, Niki was Vice President of Client Strategy & Development at a national class action claims administrator. For nearly 15 years, she litigated securities fraud and complex commercial cases at a national class action law firm, securing court-approved settlements in high-profile matters. She also represented defendants in insurance...

Bill Ohlemeyer brings 40 years of experience to Phillips ADR, representing plaintiffs, defendants, and working at Altria Group. He has litigated, arbitrated, mediated, and tried cases in state and federal courts, advising on legal and regulatory challenges. A Fellow in the American College of Trial Lawyers and member of the American Board of Trial Advocates, Bill graduated cum laude from the University of Missouri Law School and clerked for Chief Judge Scott O. Wright. He joined Shook, Hardy & Bacon, becoming partner in 1991, then served as Vice President and Associate General Counsel at Altria (1999–2008), managing litigation for Philip Morris...

Barry R. Ostrager, a retired New York State Supreme Court Justice (Commercial Division, 2015–2023), presided over numerous trials and resolved hundreds of commercial cases. Before his judicial role, he was a litigation partner at Simpson Thacher & Bartlett LLP, leading its 300+ attorney Litigation Department and serving on the management committee. As lead trial counsel, Ostrager handled high-profile securities, antitrust, and insurance cases, including Swiss Re’s World Trade Center dispute and Travelers’ environmental coverage case against Shell Oil, both resulting in jury verdicts. He tried five cases involving $1 billion+ disputes and led major arbitrations, such as Andersen Consulting’s $14 billion...

Miles, a Phillips ADR mediator, excels in securities, antitrust, professional liability, mass torts, and complex commercial litigation, closing settlements totaling nearly $3 billion. Previously, he was a renowned trial and appellate lawyer for over 40 years, serving as Global Chair of Latham & Watkins’ Litigation Department. Recognized as a “legendary litigator” by the New York Law Journal, he received its Lifetime Achievement Award and accolades from Chambers USA, Best Lawyers (New York City’s Lawyer of the Year for Securities Litigation), and the Lawdragon 500 Hall of Fame. His economics and mathematics expertise aids in analyzing damages and crafting innovative settlement...

Edwin V. Woodsome, a Phillips ADR neutral, was managing partner of Dechert LLP’s Los Angeles office and head of Global Litigation at Orrick, Herrington & Sutcliffe. With over 35 years of trial experience, he has handled consumer fraud, False Claims Act, securities, product liability, trade secrets, employment, antitrust, and intellectual property cases in state and federal courts. He has extensive appellate, mediation, and arbitration experience, including the U.S. District Court for the Central District of California’s mediation panel. Woodsome represented major firms in transportation, banking, technology, aerospace, and entertainment, serving as U.S. national litigation counsel for a global logistics company and...

Michelle Yoshida, a full-time mediator, arbitrator, and special master since 2007, joined Phillips ADR in 2014. Previously with Judge Daniel Weinstein’s team, she has mediated over 500 disputes with billions in settlements, excelling in complex cases involving securities, insurance, professional liability, ERISA, and trustee issues. Known for quickly grasping legal and factual complexities, she manages large ADR cases with objectivity and determination, finding practical solutions for disputes ranging from personal contracts to major corporate matters. Michelle builds trust and productive relationships with mediation participants. Before becoming a neutral, she was a trial attorney handling complex business litigation, including contracts, insurance, intellectual...

Gregory P. Lindstrom, a Phillips ADR neutral since 2014, brings extensive litigation and business experience from his roles as a Latham & Watkins litigation partner and General Counsel of The Irvine Company. A full-time mediator and arbitrator since 2012, he specializes in complex disputes, including antitrust, securities, intellectual property, and commercial matters. Born in California, Greg graduated summa cum laude from UCLA (Economics, 1975) and earned his J.D. from the University of Chicago Law School (1978), working with Professor Richard Posner. At Latham & Watkins (1978–2008), he became a partner in 1986, managed the San Francisco office, and served on the...

Ann Cook brings a business-focused approach to Phillips ADR, leveraging a decade at Ernst & Young LLP, including two years as General Counsel. Experienced as both plaintiff and defendant, she understands dispute dynamics and has litigated, arbitrated, and mediated cases in accounting, securities, contracts, and employment. A creative problem solver, Ann advised on complex corporate initiatives, balancing risk and business goals, earning recognition as a tenacious leader. At EY, Ann managed legal strategy for a $20B firm with 50,000 employees, overseeing litigation and regulatory matters during high regulatory activity. She advised on public disclosure and bankruptcy issues for over 1,000 public...

Caroline brings extensive mediation and problem-solving expertise to Phillips ADR, drawing from her roles as General Counsel at PricewaterhouseCoopers (PwC) and Principal Deputy White House Counsel. Known for her communication, judgment, and legal acumen, she excels in advising Boards and senior leaders on dispute resolution. At PwC, Caroline managed all legal, regulatory, compliance, and governance matters, handling lawsuits and regulatory issues with potential damages in the billions. She led settlement negotiations and mediations with opposing counsel, clients, and regulators like the SEC and FDIC, while resolving internal conflicts within PwC’s global network. As Principal Deputy White House Counsel under President Obama, she...

Sean Coffey, a Phillips ADR neutral, served as the 24th General Counsel of the Navy (2022–2025), leading over 1,100 attorneys worldwide. Previously a renowned trial lawyer, he handled plaintiff and defense cases in securities, class actions, and complex litigation. At Latham & Watkins, he secured a directed verdict in a bet-the-company case. At Bernstein Litowitz, he led the $6.2 billion WorldCom Securities Litigation recovery. As Chair of Complex Litigation at Kramer Levin, he advised corporate clients. As Navy General Counsel, Sean founded the Taxpayer Advocacy Project and led the exoneration of 256 African American Sailors from the 1944 Port Chicago courts-martial,...

Greg joined Phillips ADR after a 40-year career litigating high-stakes securities class actions, fiduciary duty cases, and complex commercial disputes in federal, state, and bankruptcy courts. After clerking for Judge John Cannella in SDNY, he joined Kramer Levin, becoming a partner in 1981, where he litigated hostile takeover battles in the 1970s and 1980s, often representing raiders. In 1988, Greg moved to Weil Gotshal & Manges’ Securities Litigation Group, becoming co-head in 1998. He handled M&A litigation, including high-profile Delaware cases (Blasius, Macmillan, CBS), securities class actions, and SEC investigations, defending clients like GE, Campbell’s, and Genworth. Greg served on the...