Q1: What area of law does E.I. du Pont de Nemours & Co. v. Christopher primarily address?
Trade Secrets / Unfair Competition
Q2: What was the central legal issue in E.I. du Pont de Nemours & Co. v. Christopher?
Does intentionally photographing a competitor's plant under construction from public airspace, for the purpose of learning a trade secret, constitute acquisition by improper means sufficient to support a claim for trade secret misappropriation even though there was no physical trespass or breach of a confidential relationship?
Q3: What rule did the court apply?
Under trade secret law (as reflected in Restatement (First) of Torts § 757 and its commentary), one who discovers another's trade secret by improper means is liable for its appropriation. Improper means include theft, bribery, misrepresentation, breach or inducement of a breach of a duty to maintain secrecy, and espionage through electronic or other means. While a trade secret owner must use reasonable efforts to maintain secrecy, the law does not require guarding against every conceivable method of discovery; rather, the focus is whether the defendant's method is improper under standards of commercial morality.
Q4: What was the court's holding?
Yes. The Fifth Circuit held that aerial industrial espionage is an improper means of acquiring a trade secret. The court reversed the grant of summary judgment for the defendants and remanded for further proceedings.
Q5: Why is E.I. du Pont de Nemours & Co. v. Christopher significant?
DuPont v. Christopher is a seminal authority on "improper means," widely cited by courts and commentators and later codified in spirit by the UTSA's definition of improper means, which includes "espionage through electronic or other means." It teaches that (1) reasonable efforts do not require hermetic secrecy or economically prohibitive measures, (2) the absence of trespass or a breached confidentiality duty does not immunize conduct when the acquisition method is unfair, and (3) trade secret doctrine adapts to evolving technologies. For students, the case provides a clean contrast with lawful reverse engineering or independent invention: those are proper means; industrial espionage—even from public vantage points—can be improper.