Mark,
I agree with you that China can't be trusted with honoring Amarin's IP. However, that's the risk we all have to take. Pfizer, for example has a huge presence in China with many patented drugs not being stolen by China (yet).
As to Amarin's partnership with Eddingpharm:
I’m not the expert on this, but if either party wants to terminate the agreement in December, that event will not affect Amarin’s IP rights. As I said above, China may steal Amarin’s IP in either case, but if Eddingpharm’s distribution rights are terminated then Amarin will be free to find another partner, Pfizer, for example, or simply be clear of Eddingpharm for a BO. China is huge and worth the risk, IMO