Prior copyright cases allowed protection for “structure, sequence, and organization” (SSO) of software. Oracle’s basic argument was that Google copied the SSO

Prior copyright cases allowed protection for “structure, sequence, and organization” (SSO) of software. Oracle’s basic argument was that Google copied the SSO of Java for Android/Dalvik. The Oracle decision undid that when it came to reimplementing APIs and libraries so that code could be compatible between systems. Basically, now no one can own an API or prevent anyone else from reimplementing and selling a compatible API, at least not in the U.S. (I am a lawyer, but not your lawyer. Not legal advice, etc.)