An anonymous reader writes: TheRegister says Google's attempt to purge copyright from header files has put mobile developers at risk of being forced to reveal their own source code, according to legal experts. This time it's not patents or Android's reinterpretation of Java that's causing problems, but the Linux code that compiles down into Android itself. The discussion started with a Huffington Post article by IP lawyer Edward Naughton, who has serious doubts about Google's approach to the Linux kernel header files. He in turn links to copyright law professor Ray Nimmer's blog post on disclosure risks on copyleft platforms. And IP blogger Florian Mueller believes Google faces a serious Linux copyright issue.