If you receive one of these letters, I suggest that you
do not ignore it! You should seek the advice of an attorney. It is true that a common tactic in situations such as this is to go after a bunch of little guys to develop a track-record and see what the likely defenses are to the claim before going after the big guys.
Only time will tell if the patent is enforceable. Also, you will want an attorney to evaluate the scope of the patents they are claiming have been infringed and compare that to what you do. It may be that your method of providing video is not a method within the scope of the patent.
