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About Wendel Rosen

Clients come to Wendel, Rosen, Black & Dean LLP from a broad spectrum of industries, including small startups, major corporations, and public entities. We work hard to maintain the trust and personalized attention that our clients have come to expect.  While we have a strong regional name, we serve clients nationwide in many types of transactional and litigation matters.

Founded in 1909, we're proud to be one of the largest and oldest continuing law practices in the East Bay.  We are the Lawyers for East Bay Business®.  In 2005, we opened a Central Valley office in Modesto, California to better serve our clients in the region.

Throughout this site, you will find information on specific   practice areas, matter types and industry work; however, it is impossible to capture everything we've done in these pages. We would like to get to know you and help you further identify your current and future legal needs. Contact us and let us know how we can help.

Commitment to Green

In July 2003, Wendel Rosen became the first law firm in the country to gain third-party certification as a "Green Business." For more information on Wendel Rosen's green efforts, please explore the pages of this site dedicated to our green initiative. Wendel Rosen is affiliated with the following green organizations, as well as many green industry trade groups serving specific markets:


Wendel Rosen uses various technologies to better serve our clients. We consider these communication and organizational tools to be an important support system to the inter-personal relationships we develop with our clients, as well as a means to more efficiently deliver cost-effective and timely services.  To learn more, please visit our "Use of Technology" web page.


Certified B Corporation

Wendel Rosen has been a Certified B Corporation since 2010. In 2013 we were recertified. To learn more about being a B Corporation, please visit B Corp Certification on our website.