That Seeking Alpha article made some good points. It was sly on Amarin's part to take on a small California-based insurer. This way, it didn't cause an adverse reaction from the big insurers. Amarin knows that a victory against Health Net will ensure that insurance companies, big and small, take responsibility for the obvious infringement intent of the generics.
I'm not sure I would have claimed, as the author did, that two "courts" have ruled on the infringement case. It was really just two judges in the same court. A magistrate judge assigned by the district judge to do preliminary work and then the district judge himself.
The one surprise in the article to me was that the author didn't list among reasons why he'd pick up shares is an increase in sales in the U.S. and the beginning of meaningful sales in Europe and Canada. Seeing revenues growing by $100,000 or $200,000 each quarter and profits also on the increase would begin a steady rise in the share price.