I have a product I purchase in China. It is similar to a product with a patent being sold by company (A) in a different country to mine. I understand. I can continue to sell my product in any country company (A) doesn't hold a patent for this product. However, if company (A) then applies and gains a patent in my country. can I still continue to sell my similar product as I established my business prior to the company (A's) patent registration. Or Must I seek to have my product deemed not similar to continue selling it.