Way too confusing ...
The third party company (Anymode) that makes the covers is privately held and the CEO is the nephew of the Samsung chairman and CEO. The parent company of Anymode is Youngbo engineering, who's CEO is also the CEO of Samsung himself ...
Basically it's these are all companies spun off and owned by the Samsung family (meant to overcome legalities??)
.
Then shouldn't Apple sue Anymode or Youngbo engineering ?
If they are going after Samsung, it's not over these cases.
Anyway, even the title of this article is wrong, Apple have not brought suit against Samsung over this, they have just sent them notice.