GPT-5.1 vs o3

The 1984 case is *Sony Corporation of America v. Universal City Studios, Inc.*, 464 U.S. 417 (1984). The Supreme Court ruled 5–4 that private, noncommercial “time-shifting” of free over‑the‑air television broadcasts using Sony’s Betamax VCR constituted fair use and that Sony was not secondarily liable for copyright infringement by users.[1] During earlier congressional hearings, MPAA president Jack Valenti famously warned that “the VCR is to the American film producer and the American public as the Boston Strangler is to the woman home alone,” dramatizing the perceived existential threat posed by home recording technology.[2] The 2013 case is *Kirtsaeng v. John Wiley & Sons, Inc.*, 568 U.S. 519 (2013). The Court held 6–3 that the “first sale” doctrine in 17 U.S.C. §109(a) applies to lawfully made copies of copyrighted works regardless of where they were manufactured.[3] Supap Kirtsaeng, a Thai student at Cornell University, had friends and relatives buy legitimate, low‑priced foreign editions of Wiley textbooks in Thailand and ship them to him in the United States, where he resold these physical textbooks at a profit.[3][4] The decision confirmed that owners of lawful copies— including imported books—may resell them without the copyright holder’s permission, underpinning not only the used‑book and resale markets but also broader secondary markets for legally purchased goods. ## References [1] *Sony Corp. of America v. Universal City Studios, Inc.*, 464 U.S. 417 (1984). [2] U.S. House of Representatives, Home Recording of Copyrighted Works Hearing, 97th Cong. (1982); contemporary reporting on Jack Valenti’s “Boston Strangler” quote. [3] *Kirtsaeng v. John Wiley & Sons, Inc.*, 568 U.S. 519 (2013). [4] Supreme Court syllabus and case summaries describing Kirtsaeng’s textbook resale business.

Sony Corp. of America v. Universal City Studios, Inc. (1984) and Kirtsaeng v. John Wiley & Sons, Inc. (2013) are the two pivotal Supreme Court rulings. 1. 1984 – Sony Corp. of America v. Universal City Studios, Inc. • Final vote: 5–4, with the Court holding that private, non-commercial “time-shifting” of broadcast television on Sony’s Betamax videocassette recorder constituted fair use and that Sony was not secondarily liable for users’ copying [1]. • Jack Valenti, then-president of the Motion Picture Association of America, warned Congress that the VCR was “to the American film producer and the American public as the Boston Strangler is to the woman home alone” [2]. 2. 2013 – Kirtsaeng v. John Wiley & Sons, Inc. • Final vote: 6–3, with the Court affirming that the first-sale doctrine applies to copies lawfully made abroad, allowing their importation and resale without the copyright owner’s permission [3]. • The Cornell University graduate student, Supap Kirtsaeng, was importing and reselling legitimately purchased English-language college textbooks that Wiley had printed in Thailand for foreign markets [3][4]. Together, these decisions secured foundational rights for consumers and secondary markets. Sony ensured that recording technology could legally be sold and used for personal viewing, spawning the home video rental boom. Kirtsaeng clarified that once a copyrighted work is lawfully manufactured and sold—even outside the United States—the owner’s control is exhausted, legitimizing gray-market imports and reinforcing the modern resale economy for books, electronics, and countless other goods.