An interesting view on China and IP. My view; a secret isn't a secret when more than 5 people know about it; then it becomes information (to quote Lord Varys from the Game of Thrones).
If it's important to you then you can't rely on keeping it a secret because usually more than this number of people know about it inside your own organization. So, please, use the IP systems even if they aren't perfect.
And it is no use accusing the Chinese of stealing secrets That is oxymoronic. They couldn't steal them if they were secrets. Where these sort of accusations are bandied about, you will invariably find that the so-called secret has become information, and it has simply been borrowed.