Managing partner, A.V. Rated John B. Marcin is a highly accomplished trial lawyer. He was aptly labeled the "Dragon Slayer" by the Los Angeles Daily Journal for his litigation skills and exploits. (See article "Dragon Slayer" in the "Articles" section of this web site). A veteran of more than fifty complex business litigations, and of over seventy-five bench and jury trials (including over twenty-three three week or longer jury trials), he has successfully represented plaintiffs and defendants in both state and federal court. In addition, he has extensive experience litigating general corporate, real estate, partnership disputes, employment cases, and trademark and copyright cases. Mr. Marcin is a professor at the University of West Los Angeles where he teaches litigation.

In the area of complex commercial and financial litigation, Mr. Marcin has advised, represented, and served as lead trial counsel for companies and financial institutions in numerous matters involving covenant defaults and threatened or actual bankruptcy, insolvency, or receiver scenarios. He has also advised, represented, and served as lead trial counsel for individuals and firms and highly contentious employment matters where breaches of contracts, discrimination, and harassment were claimed.

Among other notable victories, Mr. Marcin successfully represented a plaintiff in an employment action resulting in a plaintiff's jury verdict after a three-week trial which resulted in a $3.5 million verdict. In another notable victory, Mr. Marcin successfully defended an individual sued by Goldrich and Kest, and Jerome Snyder (all land developers and builders in Southern California) who sought over $5 million in damages (excluding punitive damages) against a former partner whom they claimed breached duties to them. After a three-week jury trial, the jury found squarely against the plaintiffs on all causes of action and all theories.

Before co-founding Marcin Lambirth, LLP Mr. Marcin had worked with the law firm of Murphy Weir & Butler in San Francisco (which merged with Winston & Strawn in 2003).

Mr. Marcin is admitted to practice in California, Nevada, and Washington D.C. He also is admitted to the Central, Southern, Eastern, and Northern District Courts of California, the District of Nevada, as well as the Ninth Circuit Court of Appeals, and the United States Supreme Court. Mr. Marcin is a member of the American Bar Association, the Federal Bar Association, and the American Inns of Court (the Business Litigation Inn of Court).