On 3/9/2010 11:48 AM, RJack wrote:
"Copyleft" style licenses are unenforceable under U.S. law.
No, that's not correct. A court has enforced an open license:
<http://www.cafc.uscourts.gov/opinions/08-1001.pdf> Copyright holders
who engage in open source licensing have the right to control the
modification and distribution of copyrighted material. As the Second
Circuit explained in Gilliam v. ABC, 538 F.2d 14, 21 (2d Cir. 1976),
the "unauthorized editing of the underlying work, if proven, would
constitute an infringement of the copyright in that work similar to
any other use of a work that exceeded the license granted by the
proprietor of the copyright." Copyright licenses are designed to
support the right to exclude; money damages alone do not support or
enforce that right. The choice to exact consideration in the form of
compliance with the open source requirements of disclosure and
explanation of changes, rather than as a dollar- denominated fee, is
entitled to no less legal recognition. Indeed, because a calculation
of damages is inherently speculative, these types of license
restrictions might well be rendered meaningless absent the ability to
enforce through injunctive relief.