Thyroff v. Nationwide Mutual Insurance Co.
864 N.E.2d 1272 (2007)
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Rule of Law:
The common-law tort of conversion, which provides a remedy for the wrongful interference with personal property, extends to intangible electronic records and data that are stored on a computer and are indistinguishable in function from printed documents.
Facts:
- In 1988, Louis Thyroff, an insurance agent, entered into an Agent's Agreement with Nationwide Mutual Insurance Company.
- As part of the agreement, Nationwide leased Thyroff a computer hardware and software system, on which Thyroff stored both business data and personal information.
- Nationwide had the ability to automatically upload all information from Thyroff's computer system to its own centralized computers on a daily basis.
- The agreement between Thyroff and Nationwide was terminable at will.
- In September 2000, Nationwide terminated its agreement with Thyroff.
- The day after the termination, Nationwide repossessed the computer system and denied Thyroff any further access to the electronic records and data stored on it.
- As a result, Thyroff was unable to retrieve his customer information and other personal data from the system.
Procedural Posture:
- Louis Thyroff sued Nationwide Mutual Insurance Company in the U.S. District Court for the Western District of New York, asserting a claim for conversion of his electronic data.
- Nationwide filed a motion to dismiss the conversion claim.
- The District Court (trial court) granted Nationwide's motion, holding that the complaint failed to state a cause of action for conversion under existing law.
- Thyroff (appellant) appealed the dismissal to the U.S. Court of Appeals for the Second Circuit.
- Finding the issue unresolved in state law, the Second Circuit certified the legal question to the New York Court of Appeals (the highest court of the state).
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Issue:
Is a claim for the conversion of electronic data cognizable under New York law?
Opinions:
Majority - Graffeo, J.
Yes. A claim for the conversion of electronic data is cognizable under New York law because the common law must evolve to address the realities of a society that relies heavily on computers and digital information. The court reasoned that the tort of conversion, historically limited to tangible property, had already expanded through the 'merger doctrine' to include intangible rights represented by physical documents, such as stock certificates. Recognizing that society's reliance on electronic data is now essential, the court saw no logical reason to treat a document stored electronically differently from one printed on paper. The intrinsic value lies in the information itself, not its physical medium, and the law must adapt to protect this value whether it is in tangible or virtual form.
Analysis:
This decision significantly modernizes the common-law tort of conversion in New York by explicitly extending its reach to intangible electronic data. By severing the tort's ancient requirement of a tangible object, the court provides a crucial civil remedy for the misappropriation of digital assets in an increasingly paperless world. This precedent establishes that wrongfully exercising dominion over another's electronic files, such as customer lists or personal data, is actionable as conversion. The ruling will likely influence future cases involving data theft, unauthorized access, and the destruction of digital information, providing a stronger legal footing for plaintiffs whose primary assets are intangible.

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