Google has a new legal battle on its hands, and this time it’s over Android. Oracle has filed a complaint against Google, alleging that Google is infringing upon several patents it holds, related to Java.

The properties in question would be those Oracle received in its Sun Microsystems acquisition earlier this year.

"In developing Android, Google knowingly, directly and repeatedly infringed Oracle’s Java-related intellectual property," said Oracle spokesperson Karen Tillman. "This lawsuit seeks appropriate remedies for their infringement."

Here’s the entire complaint (via Kara Swisher):

There’s no question that Java is a big part of the Android ecosystem. Developers create Android apps with Java. According to Ars Technica, "Aside from its use of Java syntax, Google’s Android SDK implementation is largely independent from Oracle’s. It uses its own compiler and runtime tailored specifically for Android."

Oracle’s complaint mentions seven patents in all, which it claims Google is infringing upon.