When someone's just replicated your product, what you should do first is get on the phone and show 'em whom they're messing with.
Do you have a plan for handling copycats? Your success will largely be dictated by how you respond in the midst of fierce competition.
The threat of copycats
Imitation is the sincerest form of flattery, as the old saying goes. But, while that may be true in certain areas of life, it’s hardly reassuring when it happens in the business world. All that imitation says in that context is that someone else is out there trying to latch onto an idea or niche that you’ve spent months or years building.