by John Marshall Harlan, Oates v. National Bank — Opinion of the Court
“ But independent of that aspect of the case, and throwing out of view altogether the usurious feature of the contract, we are of opinion that a creditor, who takes a negotiable note before maturity, so indorsed that he becomes a party to the instrument as collateral security for a pre-existing debt, and in consideration of an extension of time to the debtor, actually granted, is, according to the law merchant, a holder for value, and that his rights as such holder cannot be affected by equities between antecedent parties, of which he had no notice. ”
