Rights arising from third-party beneficiary contracts are enforceable by beneficiary.
Rights arising under a manufacturer s warranty of its products are often enforceable by persons other than the one who actually bought the product. Assignment would materially increase . . . Assignment would materially impair . . . If the obligor has made partial payment to the assignor or has a counterclaim against same, the right obtained by assignee may be subject to such claims. Assignee may have rights against assignor for a breach of any express or implied warranties made by the assignor.