Client-Focused Business & Commercial Dispute Litigation

McKasson & Klein LLP practice areas encompass both business transactions and litigation. We have years of successful and dedicated experience in the fields of commercial disputes, sophisticated business agreements, employment, maritime, international arbitration and intellectual property.

Our clients include product manufacturers, service providers of all kinds, doctors’ practices, vessel owners and charterers, P&I clubs, freight-forwarders, private schools and non-profit organizations.

Located in California, the firm has a wide California client base and is a boutique firm for international clients. As globalization has increased, so has business and law transcended international borders. McKasson & Klein has adapted and thrived with these changes and stands ready to meet its clients’ goals—wherever those goals and clients may be located.

Contact us today if you need legal assistance with any of the following:

  • Business Litigation
  • Intellectual Property
  • Maritime 
  • International Arbitration & Cross-Border Issues
  • Business Transactions 
  • Employment 
  • Real Property

Call 949-724-0200 to arrange your consultation.

Attorney John McKasson

John represents service businesses, foreign and domestic manufacturers, distributors, importers, and leasing companies. He represents buyers and sellers in business sales and asset acquisitions ranging in size from a half million to several hundred million dollars. John has also been corporate counsel for numerous mid-sized and large corporations, some of which have been clients for 15+ years and is a testament to these clients’ satisfaction with his work. He drafts their agreements, addresses their general corporate needs, and handles their litigation disputes.

John obtained his undergraduate degree in Business Finance in 1985. He graduated magna cum laude from the University of San Diego School of Law in 1988 on a full merit scholarship for being ranked #2 in his class. He was recruited directly out of law school by one of California’s top-5 rated law firms where he spent a few years, and then he joined a well-known firm of trial lawyers. There, he learned the ropes of trial before forming his own law firm in 1996.

With 20+ years of practice, John’s litigation practice focuses on business, IP, defense of administrative actions, and employment litigation in federal, administrative and state courts. He has obtained many successful defense and plaintiff’s verdicts for his business clients, including multimillion-dollar plaintiff’s verdicts and favorable adjudication of clients’ intellectual property rights.

Bar Admissions:

  • California 


  • University of San Diego School of Law: Law (JD – Juris Doctor 1988)
  • California State University, San Diego: Bachelor of Arts in Business Finance

Attorney Neil Klein

Neil is a partner at McKasson & Klein LLP in Irvine, California, a boutique law firm established in 1995, near the ports of Long Beach and Los Angeles.

Neil is a litigator and a transactional lawyer. His practice focuses on international transactions and disputes, maritime, commercial/business and employment matters, licensing, corporate formation and set up. Among others, he represents foreign and US entrepreneurs, manufacturers, suppliers, importers and exporters, vessel owners and charterers, P&I Clubs, container lessors, bunker suppliers, and several US ports.

He handles maritime Rule B, C and D vessel arrests & attachments, bunker claims, charter party disputes, port tariffs, regulatory matters and creditors in maritime bankruptcies. He also advises manufacturers, construction companies and related business interests on offshore wind farm and energy related projects, including US Jones Act compliance.

Neil has been recognized as one of the “Top 5” commercial lawyers in Southern California since 2015, and has been an expert witness on US maritime and California commercial law issues in China, England and the Bahamas. He also acts as an arbitrator in shipping disputes.
He grew up in Durban, South Africa and was admitted to the South African Bar before coming to California.

Neil is a frequent speaker at seminars and conferences, and has published many articles on maritime and international issues and disputes. He is a Proctor member of the Maritime Law Association, and a member of the International Bar Association, Maritime & Transport Law Section.

Bar Admissions:

  • California 


  • Natal University, Pietermaritzburg: Law, 1977

Languages Spoken:

  • English
  • Afrikaans

Attorney Rocio Ashby

Rocio Ashby is an associate with McKasson & Klein. Her experience includes a broad range of litigation and business matters. Rocio’s practice focuses on civil litigation representing domestic and foreign clients in contract, intellectual property and maritime disputes. She was admitted to the State Bar of California in 1999.

Rocio is fluent in Spanish. She was born in Central America and moved to the United States in the late 1980s. She earned an undergraduate degree in Political Science and Latin American Studies from Pitzer College, and graduated from Loyola Law School, Los Angeles, in 1999. While in law school, Rocio served as a judicial extern for the Honorable Robert W. Alberts in the U.S. Bankruptcy Court, Central District, and was a conciliator at the Loyola Center for Conflict Resolution.

She has been affiliated with the firm since 2001. After scaling back her practice for a few years to raise her son, Rocio reintegrated into law practice in 2011.

Rocio enjoys travel, reading, and spending time in the outdoors. She is active in her son’s school and volunteers her time as a member of the PTA and as a committee chair for its annual book fair. She served for four years on the board of directors of Helping Honduras Kids, a U.S. nonprofit organization devoted to improving the lives of underprivileged children in Honduras.

Bar Admissions:

  • California 


  • Loyola Marymount University Law School, Los Angeles: Law ((JD – Juris Doctor 1999)
  • Pitzer College, Claremont: Bachelor of Arts in Political Science and Latin American Studies

Languages Spoken:

  • English
  • Spanish

Attorney Marcella Chambers

Marcella’s practice focuses on a wide array of business matters, including commercial litigation, corporate transactions, government agency issues and creditors’ rights. Her clients mainly comprise of service businesses, manufacturers, and transportation businesses. Marcella protects the rights of creditors in bankruptcy, including preference avoidance actions. She also deals with issues concerning the federal Stark and Anti-Kickback laws in addition to handling routine business matters for medical practices.

Marcella attended the University of Arizona, and graduated cum laude with a bachelor’s degree in Finance in 2000. She earned her juris doctor from the University of Arizona, James E. Rogers College of Law.

During law school, Marcella was an extern for the Honorable Gary E. Donahoe of the Maricopa County Superior Court. Upon graduation in 2004, she became a member of the Arizona Bar. After practicing with a complex civil litigation firm in Phoenix with an emphasis in construction law, she became a member of the California Bar and joined the firm in 2007.

Bar Admissions:

  • California 


  • University of Arizona James E. Rogers College of Law: Law (JD – Juris Doctor 2004)
  • University of Arizona: Bachelor of Arts in Finance (Cum Laude)

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