Initial reaction when a businessman finds out that someone else is using his trademark under a different name would most likely be rage. Afterwards, he would call up his lawyer and discuss a possible filing of a copyright infringement case. It may sound simple but getting into process can be as exhausting as you can imagine.
Before deciding to file the case, you need to weigh things out because once and for all, engaging into a legal action is both expensive and time consuming. Just like any other cases, it would definitely involve a thorough process of investigation. Try to list the pros and cons of pursuing it compared doing the other way around.
You might have read some of the famous copyright infringement cases between huge online companies and ask yourself if you could sustain what has been happening to them.
It’s not that you aren’t going to fight for your right but at least be wise enough to get a great out of it. A lawsuit can be spared until you and the infringing party can’t meet at a common ground. Remember that the product has been patented to you and you have all the right to set the conditions.