Castle Rock v. Carol Publishing: Copyright

The Second Circuit held the Seinfeld Aptitude Test infringed: a show's fictional facts are protected expression, and repackaging them for fans is not fair use.

Few copyright opinions have a fact pattern as instantly comprehensible as Castle Rock Entertainment, Inc. v. Carol Publishing Group, Inc., 150 F.3d 132 (2d Cir. 1998). A publisher sold a trivia quiz book about Seinfeld, the most popular sitcom on American television. The show’s copyright owner sued. And on July 10, 1998, the United States Court of Appeals for the Second Circuit, in an opinion by Judge John M. Walker, Jr., affirmed summary judgment of infringement, holding that the book’s 643 questions copied protected expression and that dressing a show’s content up as a quiz is not fair use.

The decision matters far beyond game books. Castle Rock is the leading appellate authority on two propositions that govern the entire industry of unlicensed companion works: first, that “fictional facts” (events that happened only inside a fictional world) are protected expression rather than free-for-the-taking facts; and second, that fair use’s fourth factor protects derivative markets a copyright owner has chosen not to enter. Every dispute over episode guides, fan encyclopedias, quote compilations, and quiz apps still runs through this case.

At a glance

Case: Castle Rock Entertainment, Inc. v. Carol Publishing Group, Inc., 150 F.3d 132 (2d Cir. 1998)
Decided: July 10, 1998; opinion by Judge John M. Walker, Jr., joined by Judge Ellsworth Van Graafeiland and District Judge Jed S. Rakoff (sitting by designation); affirming the Southern District of New York (then-District Judge Sonia Sotomayor)
Holding: The Seinfeld Aptitude Test copied quantitatively and qualitatively substantial protected expression from Seinfeld, and the copying was not fair use because its purpose was to repackage the show for its own audience, not to comment on it.
Significance: Final; the foundational modern case on fictional facts and on television derivative markets, decided against the backdrop of a stipulated $403,000 damages award and a permanent injunction.

The statutory frame: originality, fictional facts, and the derivative-works right

Two building blocks of the Copyright Act meet in this case. The first is the originality requirement of 17 U.S.C. § 102(a) as glossed by Feist Publications, Inc. v. Rural Telephone Service Co., 499 U.S. 340 (1991): copyright protects original expression, and facts are excluded because no one authors a fact. Anyone writing a trivia book about real history copies nothing protectable when the questions test dates and events.

The second building block is the derivative-works right of 17 U.S.C. § 106(2), which gives the copyright owner the exclusive right to prepare works “based upon” the original: translations, adaptations, abridgments, and, as relevant here, the whole penumbra of spin-off products a hit television series generates.

The Seinfeld Aptitude Test sat exactly at the junction. If the doings of Jerry, George, Elaine, and Kramer were “facts” about the series, the book copied nothing protected. If instead they were the invented expression of the show’s writers, the book was a 132-page compendium of copied expression competing in a derivative market. The Second Circuit chose the second characterization, and the choice is the case’s first enduring contribution. Because the characters and events “spring from the imagination of Seinfeld’s authors,” the court explained, the book “plainly copies copyrightable, creative expression.” Each apparent fact tested by the quiz “is in reality fictitious expression” created by the show’s writers. Real facts about the production (who acted in it, when it aired) remain free; what happened inside the fiction does not.

A show about nothing, a book about the show, and a lawsuit about the book

The facts were undisputed. Beth Golub wrote, and Carol Publishing Group published, The SAT: The Seinfeld Aptitude Test, a 132-page book containing 643 trivia questions drawn from 84 of the 86 Seinfeld episodes then broadcast. The questions spanned five levels of difficulty and multiple formats, including 211 multiple-choice questions and 93 matching questions, and 41 questions and answers contained dialogue from the show. A back-cover disclaimer stated that “This book has not been approved or licensed by any entity involved in creating or producing Seinfeld,” and the book’s own marketing invited readers to “open this book to satisfy your between-episode cravings.”

Castle Rock Entertainment, which owned the copyrights in the series, had licensed little in the way of ancillary products and had declined opportunities to saturate that market. It sued Carol Publishing and Golub for copyright infringement in the Southern District of New York. Then-District Judge Sonia Sotomayor granted summary judgment to Castle Rock on the copyright claim. The parties then stipulated to damages and attorneys’ fees, and the district court entered final judgment awarding Castle Rock $403,000 with interest, permanently enjoining further publication or distribution, and ordering the destruction of all remaining copies. The defendants appealed, arguing both that they had copied only unprotected facts and that, in any event, the quiz book was a fair use under 17 U.S.C. § 107.

Substantial similarity in the aggregate: counting 643 questions

Before reaching fair use, the court had to decide whether the copying was actionable at all, and its methodology has proven as influential as its result. Drawing on Ringgold v. Black Entertainment Television, Inc., 126 F.3d 70 (2d Cir. 1997), the panel asked whether the copying was quantitatively and qualitatively sufficient. Quantitatively, the court declined to slice the analysis episode by episode; following Twin Peaks Productions, Inc. v. Publications International, Ltd., 996 F.2d 1366 (2d Cir. 1993), its earlier decision involving a guidebook to the Twin Peaks series, it assessed the 643 questions in the aggregate against the series as a whole and found the copying far beyond de minimis. Qualitatively, each question tested invented plot and dialogue, which resolved the fictional-facts question described above.

Just as notable is what the court refused to use. It found the familiar “ordinary observer” and “total concept and feel” formulations unhelpful where the two works sit in different genres and media: no one would confuse a quiz book with a sitcom, yet the book could still be built almost entirely out of the sitcom’s expression. That insight now guides infringement analysis whenever the accused work is a database, guide, or compilation built from someone else’s fictional universe.

Fair use: repackaging is not transformation

The heart of the opinion is its fair use analysis under the four factors of 17 U.S.C. § 107, applied through the lens of Campbell v. Acuff-Rose Music, Inc., 510 U.S. 569 (1994), which four years earlier had made transformative purpose the touchstone of the first factor.

The defendants argued that the book was a “critical text” that exposed and commented on the show’s “nothingness.” The court was unpersuaded, and its response supplied one of the most quoted lines in fair use law: “Any transformative purpose possessed by The SAT is slight to non-existent.” The book did not analyze, critique, or comment; it “simply poses trivia questions,” and its purpose, as its own back cover advertised, was to repackage Seinfeld to entertain Seinfeld viewers between episodes. A claimed critical purpose that the work itself does not exhibit gets no weight. The first factor favored Castle Rock.

The remaining factors followed. The second factor favored Castle Rock because Seinfeld is a fictional, highly creative work, the kind closest to the core of copyright protection. On the third factor, the court corrected the district court’s shortcut of relying on substantial similarity alone: under Campbell, the amount copied must be measured against the secondary purpose. Because the book’s actual purpose was entertainment rather than commentary, taking 643 questions’ worth of material from 84 episodes was far more than any legitimate purpose required.

The fourth factor produced the opinion’s second enduring principle. Seinfeld’s audience had actually grown after the book appeared, and Castle Rock showed no lost sales. No matter, the court held: the relevant market includes derivative markets, and The SAT “substitutes for a derivative market that a television program copyright owner such as Castle Rock would in general develop or license others to develop.” That Castle Rock had deliberately stayed out of the trivia-book market cut in its favor, not against it. It would not serve the Copyright Act, the court reasoned, to strip artists of their monopoly over derivative versions merely because they made the artistic decision not to saturate those markets. The judgment, the damages award, and the injunction (which required destruction of remaining copies) were affirmed.

Open questions

Castle Rock answered whether fictional facts are protected but left the harder boundary questions open. The court acknowledged that genuine commentary and criticism about a series remain fair game, yet it offered no metric for how much analysis converts a repackaging into a critique; later disputes over annotated episode guides and fan encyclopedias had to work that out case by case. The derivative-market holding also contains a much-debated circularity: if the market a copyright owner “would in general develop or license” defines factor four, almost any commercially successful secondary use can be described as a licensable market. Courts are still calibrating that principle, most recently under Andy Warhol Foundation for the Visual Arts, Inc. v. Goldsmith, 598 U.S. 508 (2023), which echoed Castle Rock’s insistence that sharing the original’s entertainment purpose undermines the first factor.

Implications for creators and businesses

License the fictional world, not just the footage. Rights owners should treat plots, invented dialogue, character backstories, and running gags as protectable assets. Castle Rock lets studios police quiz books, companion guides, and apps built from story content even where no frames or clips are copied.
Unentered markets are still your markets. A studio’s decision not to exploit a category of merchandise or publishing does not open it to others. Document derivative-licensing programs anyway; they make the factor-four showing effortless.
Commentary must be real, visible, and proportionate. Publishers of unlicensed companion works should build the critical or analytical apparatus into the work itself, not the litigation brief, and should copy no more of the underlying fiction than the commentary requires. Marketing copy that promises fans more of the show they love will be quoted back as evidence of a superseding purpose.
Disclaimers do not immunize. The SAT carried a plain disclaimer that it was not approved or licensed by anyone involved in the show, and the court still found infringement without treating the disclaimer as any part of the copyright or fair use analysis. (Trademark and unfair competition were not before the panel; it said so expressly.) What matters for copyright is what was copied and why, not whether consumers were told the product was unofficial. The court did address a related point: it held that the defendants’ continued distribution after Castle Rock objected was of no relevance to fair use, because being denied permission does not weigh against a fair use finding.

Frequently asked questions

Are details from a fictional TV show copyrightable facts? No. Under Feist Publications, Inc. v. Rural Telephone Service Co., facts are free for anyone to use because no one authored them. But events that exist only in a script were authored, so Castle Rock treats them as protected creative expression. A question asking what Kramer did in a given episode is really asking about dialogue and plot the show’s writers invented, and copying enough of those invented details is copying the work itself.

Why did the Seinfeld Aptitude Test fail the fair use test? The Second Circuit found any transformative purpose slight to non-existent because the book did not comment on or analyze the show; it repackaged Seinfeld to entertain the same audience. With a creative work copied 643 times for a non-critical purpose, the first three statutory factors favored Castle Rock, and the court held the book substituted for a derivative market the copyright owner would in general develop or license.

What does Castle Rock mean for unlicensed trivia books and fan guides today? It does not outlaw the genre, but it draws the line at repackaging. A companion work built on genuine criticism, scholarship, parody, or commentary about a series can still claim fair use, while one whose real value is delivering the show’s own creative content to fans needs a license. The safest unlicensed works add their own analysis and take only what that analysis requires.