David Biderman, a partner in Perkins Coie's San Francisco and Los Angeles offices, focuses his practice on mass tort litigation and consumer class actions. He heads the firm's Mass Tort and Consumer Litigation group. He has represented a wide variety of companies in state and federal courts in California for 30 years.

On consumer class actions, David represents packaged food companies, coffee companies, dairy companies, footwear companies and others whose nutritional or health claims have been challenged. He also has represented search engines and other online companies. He has a record of favorable results for clients. He successfully tried a major consumer fraud class action on behalf of one of the world’s major search engines in a case involving online gambling advertisements. For that same client, he negotiated a favorable settlement of a class action challenging its online advertising pricing. He represented a major coffee retailer in defeating a class action on standing grounds. He also has litigated pre-emption defenses arising out of food labeling and obtained a dismissal for a client whose nutritional statements were challenged.

For fifteen years, David managed the firm’s full-service product liability team responsible for defending over 1,000 toxic tort cases pending in Los Angeles and Northern California state courts. These cases entailed ongoing trial activity at various levels for several trials set each month. The highly experienced and well-coordinated team has handled thousands of asbestos toxic tort cases for a variety of clients, including FORTUNE 500 companies from such industries as consumer products, aerospace manufacturing, household goods, dry cleaning and industries that generate electromagnetic fields, such as electric utilities and operators of wireless communications systems.