Oracle Corp. updated its copyright and patent-infringement lawsuit against Google Inc., claiming some of the Internet search giant’s Android mobile-phone software was “directly copied” from the business software maker’s Java code.

“In at least several instances, Android computer program code also was directly copied from copyrighted Oracle America code,” according to a new filing late Wednesday that ups the ante on the initial complaint.

A spokesman for Mountain View, Calif.-based Google once again called the lawsuit “baseless,” adding that “Google’s philosophy is that innovation and competition is best for consumers, while Oracle prefers litigation.”

Redwood Shores, Calif.-based Oracle, in its original lawsuit, provided few details about the alleged infringement, but exhibits attached to the amended filing provide specific examples. The complaint says “approximately one third” of Android’s application programmer interface (API) packages, which let outside developers connect with the software, are derived from Oracle’s copyrighted Java API packages and related documents.

Oracle was not immediately available for comment.

Oracle’s complaint against Google stems from Oracle’s purchase of computer maker Sun Microsystems earlier this year. Sun developed Java, software that includes a programming language and associated technologies that are widely used in server systems, cellphones and other products.

In August, Oracle accused Google of seven counts of patent infringement and one count of copyright infringement associated with Java.

Google fired back at Oracle earlier this month, denying the Android operating system infringes Oracle’s patents and copyrights and asking the U.S. District Court for the Northern District of California to dismiss Oracle’s lawsuit and declare Oracle’s patents invalid.

In recent trading, Oracle shares were up 1.1% to $29.02, while Google was down 7 cents at $616.40.