Round 2 in Oracle and Google‘s titanic copyright battle over Java APIs is now fully joined at the Supreme Court. Google asked the court in January to review two Federal Circuit decisions that it said threw “a devastating one-two punch at the software industry.” The company argues that copyright protection should not extend to “software interfaces,” and that lower courts “are badly in need of guidance on how to apply the fair-use doctrine in the context of computer code.”

Oracle fired back Wednesday, accusing Google of rehashing the same copyrightability arguments the court has already rejected, and of lining up “the usual list of amici” in an effort to muddle the state of fair use law.