In May 2012, U.S. District Judge William Alsup ruled that the Java APIs were not protected by copyright. Oracle appealed to the U.S Court of Appeals for the Federal Circuit; as part of that appeal, EFF filed an amicus brief on behalf of 32 computer scientists.
In a terrible decision in May 2014, the Federal Circuit reversed Judge Alsup and held that APIs are copyrightable. The Federal Circuit went out of its way to disagree with the Lotus v. Borland case I worked on twenty years ago, which dealt with similar issues. The circuit court's decision was harshly criticized by nearly every commentator who wrote about the case (the sole possible exception being a paid consultant for Oracle). One commentary observed, "The court that created the patent troll mess is screwing up copyright too" (that commentator previously observed how the Federal Circuit has damaged the patent system).
Articles by Public Knowledge about its amicus brief are here and here. CCIA's amicus brief is here. Other articles about all three of these amicus briefs are here and here.
The Law Professor's brief, filed by Pam Samuelson of U.C. Berkeley, is here.