I have to secure a business from a company who is buying the product froma japanese company. The product of japanese company is a patented product. We have successfully made the product here and have a ready buyer in India. The buyer wants us to sign an indemnity letter confirming that we have not copied or broken any patent law and wants us to issue an indemnity letter or bond to them so that in case of any infringement or legal action by the Japanese company they are protected. We are very sure that we are on the right path and have not violeted any patents rights.