The code is expression. Neither can enforce the code against the other; both can enforce against third parties (with registration). Machine code cannot be cop

The code is expression. Neither can enforce the code against the other; both can enforce against third parties (with registration). Machine code cannot be copyrighted under U.S. law. It is not an issue in the Oracle/Google case. You cannot abstract copyright. It is a codified legal doctrine (i.e., an expression), not an abstract set of ideas. On that note, however, the abstract idea behind copyright law (protection of intellectual property) is the justification for patent and trademark laws.