Should this come to pass, numerous products will suddenly find themselves on an uncertain legal standing in which the previously benign but now newly empowered copyright holders might assert punitive copyright claims. Chief among these would be any re-implementation of an existing language. So, Jython, IronPython, and PyPy for Python; JRuby, IronRuby, and Rubinius for Ruby; Mono for C# and VB; possibly C for C, GCC for C and C and Objective-C; and so forth. And of course, all the various browsers that use JavaScript might owe royalties to the acquirers of Netscape’s intellectual property.

Oracle and the End of Programming As We Know It | Dr Dobb’s

This is certainly something to keep watching. If Oracle wins this fight, derivative works will dry up. Few volunteer efforts would risk a hefty legal bill for something that may/may not pan out.

Really sad.