SAN FRANCISCO — An Alameda County jury handed Keker & Van Nest and semiconductor giant TSMC a clear victory in a hard-fought trade-secrets trial on Tuesday morning.

The jury found that rival semiconductor manufacturer SMIC, represented by Wilson Sonsini Goodrich & Rosati, misappropriated trade secrets and broke a 2005 settlement between the two companies by continuing to use the information. The case will now proceed to the damages phase, at which Keker lawyers could ask for as much as $2 billion.