Harry Potter and the Amazing Injunction
After a bookstore in Canada accidentally sold 14 copies of Harry Potter and the Half-Blood Prince before the official release date, the book's publisher obtained a court order, which as Michael Geist explained, "compelled anyone with a copy of the book to return it to the publisher along with any notes and other descriptions of its contents. Moreover, it prohibited Canadians from reading or discussing any aspect of the book.
"This bears repeating. In a free and democratic society, a book publisher sought and obtained a court order banning reading and discussion of a children’s book. In fact, Raincoast had asked the court to go even further, by compelling purchasers to disclose the names, addresses, and other contact information of any other person with whom they discussed the book’s contents."
Full story here.