Mandatory for Foreign Military Sales (FMS) Letters of Offer and Acceptance (LOAs) when an individual, commercial entity, or foreign country asserts ownership of a foreign patent on an item to be sold on the case and there are reasonable grounds that a purchaser may be subjected to a possible claim for infringement.

The note should read substantially as shown but may be tailored on a case-by-case basis.

Mandatory for Amendments and Modifications that add materiel where such infringement claims are possible.