Reuters:

Oracle Corp and Google faced off on Tuesday in a $9 billion copyright retrial, with Oracle accusing Google of stealing programming to become the world’s leading smartphone player and Google saying it acted legally as a true innovator.

At the heart of this:

Oracle claims Google’s Android smartphone operating system violated its copyright on parts of the Java programming language, while Alphabet Inc’s Google says it should be able to use Java without paying a fee under the fair-use provision of copyright law.

Lots of eyes on this:

The case has been closely watched by software developers who fear an Oracle victory could spur more software copyright lawsuits. However, investors see little risk for Google because the company could afford to pay a one-off fine, and the possibility of an injunction that would force Google to pay ongoing royalties to Oracle appears remote.

Originally went to trial in 2012, jury was deadlocked.