Generic Lovaza is a tiny tiny slice of TEVA's business today.
TEVA has a lot on their plate including branded drugs (which Kare is heavily focusing on given their good margins).
I dont see TEVA making a lot of effort to play in this space. They will do the necessary, but most likely not even close to the efforts that H&R will put in, given that the smaller companies are hungrier and have fewer revenue streams.