Thank you for the question regarding whether your importing products infringe the patent right of another. The first place to start is with a prior art search, often called a patentability search to determine any similar art that may disclose the features and elements of your invention. My recommendation is to seek a patent law firm that handles prosecution matters and knows how to conduct a thorough search and can provide you with a report disclosing similar and relevant prior art.A further consideration is how long you have been using the invention? If the invention has been disclosed in the public domain for more than 12 months is "barred' from registerability. A reputable Patent Firm will be able to answer your questions and provide you with an opinion letter for roughly $700-1200.00. I wish you luck!
Sincerely,
Andrew Rapacke
The Rapacke Law Group, P.A.
Answered on Nov 06th, 2016 at 6:27 AM