Believe me if you have a valid active patent in the USA and someone copies it and sells it in the USA they are 100% getting sued. I have been up and down the patent and trademark infringement road many times before. I have been in the performance automotive aftermarket all my life. I have been manufacturing parts overseas for over 20 years and I can assure you that no one in their right mind screws around with that. I learned to patent and trademark anything that I could so that it does not get copied, and it has worked very well. You can never stop the guys in China Town selling fake Rolexes or some of the fake counterfeit stuff on eBay or Amazon as there is so much money to be made there and little to no consequences, but on the automotive aftermarket it is pretty rare especially on the big name resellers like Summit or Jegs. The main issue with counterfeits is China sellers on eBay/Amazon that just pop up one day and start selling counterfeits, or they flood the Amazon warehouses with counterfeits, and when they are caught they just open another store. Counterfeits are like printing money, but with much less consequences especially if you are not in the USA.