I thought you were in China. These are my suggestions:
1. Shut up and don't leave any paper trails, especially in the company you are working.
2. Make sure your patten worth it. This is a tough part. It may be useful to a company, but it does not mean itself can bring positive revenue in the long run for you.
3. Make sure nobody has pattened the similar idea before. You need to search patten database.
4. Contact an lawyer.
