Stephen Johnson Field,
Manhattan Medicine Company v. Wood…
“ If they claim relief against the frauds of others, they must themselves be free from the imputation. If the sales made by the plaintiff and his firm are effected, or sought to be, by misrepresentation and falsehood, they cannot be listened to when they complain that, by the fraudulent rivalry of others, their own fraudulent profits are diminished. An exclusive privilege for deceiving the public is assuredly not one that a court of equity can be required to aid or sanction. ”
