John and James Tucker v. Oxley, Assignee of T. Moore was a case heard by the United States Supreme Court in 1809. The dispute arose when John and James Tucker purchased goods from Thomas Moore on credit with an agreement that they would pay him back at a later date. However, before they could make payment, Moore declared bankruptcy and his assets were assigned to Oxley as assignee of his estate. When the Tuckers refused to pay for the goods due to their prior agreement with Moore, Oxley sued them for breach of contract in order to recover what he believed was owed by them under the original terms agreed upon between himself and Moore’s creditors. The court ultimately ruled in favor of Oxley because it found that there had been no fraud or misrepresentation on behalf of either party involved in this transaction; therefore, both parties were bound by its original terms regardless if one party (Moore) became bankrupt after entering into it or not

In the case of John and James Tucker v. Oxley, Assignee of T. Moore, a Bankrupt, the dissenting opinion was that the assignee had no right to sue for debts due from debtors to their bankrupt principal in his own name as assignee; rather he should have sued in the name of his principal or debtor. The majority opinion held that an assignment is a transfer by operation of law and not merely an authority given by deed or writing; therefore it was within reason for Oxley to bring suit against John and James Tucker on behalf of Moore without having any written authorization from him. However, Justice Washington argued that this would be contrary to established principles which require suits brought on behalf of another person must be done so in their name instead being brought under one's own title as assignee. He further stated that if such action were allowed then creditors could use assignments fraudulently against debtors who are unaware they are dealing with someone other than whom they originally contracted with - thus creating great injustice among parties involved in commercial transactions