You might say these lawyers can get downright technical. Wilson Sonsini Goodrich & Rosati (WSGR) is one of the largest law firms in the US specializing in representing high-tech corporations. Its client roster has included several big Silicon Valley names such as Google, Cisco, Salesforce.com, Hewlett-Packard, Jive Software, Oracle, and Bazaarvoice. WSGR has advised hundreds of clients on their IPOs and has been involved in more than 500 merger and acquisition transactions (valued at more than $150 billion) in the last five years. WSGR has litigated hundreds of patent lawsuits over the years. The firm was originally founded in 1961.