John Claassen, Attorney


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Civil Rights, Corporate, Administrative Law, Collection, General Practice, Intellectual Property

925-204-3885


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John Claassen practices civil litigation in state and federal courts, primarily in Northern California. Prior to establishing his own firm, Mr. Claassen practiced civil litigation with leading national law firms, including New York-based Skadden, Arps, Slate, Meager & Flom, LLP and Silicon Valley-based Wilson Sonsini Goodrich & Rosati, P.C. There, he came into his own defending companies in sophisticated consumer and securities fraud class-actions.

Mr. Claassen received a B.A. from the University of Iowa in 1992, an M.A. from St. John's College in 1995 and a J.D. from Georgetown University Law Center in 1998. Mr. Claassen was Assistant Managing Editor of the Georgetown Journal of Legal Ethics. He was admitted to the California Bar in 2001 and the New York Bar in 1999. He is also admitted to practice in the U.S. District Court for the Northern District of California, the United States District Courts for the Southern and Eastern Districts of New York.

Mr. Claassen is a member of the Alameda County Bar Association and numerous community associations, including the Oakland Sunrise Rotary Club, and Toastmasters International.

Position Organization Location Duration
School Degree Major Graduation
Georgetown University Law CenterJ.D. Law SchoolN/A  
University of Iowa B.A.
State / Court Date
California2001
New York1999
Sun. Mon. Tue. Wed. Thu. Fri. Sat.


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Service Type: Private

Update Date: 2023-06-21

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Change Date Change Field Previous Content
2019-05-29Phone+1 5102518010
2019-05-29Firm NameClaassen Santilukka A Law Partnership
2021-07-13Firm NameClaassen, Professional Corporation
2021-07-28Firm NameClaassen Marrs, P.C.
2019-05-29Address2865 Broadway Suite 1 Oakland CA 94611 US
John Claassen
1261 Locust St
Suite C26
Walnut Creek, CA 94596
37.891382,-122.03577

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1261 Locust St
Suite C26
Walnut Creek, CA 94596


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