What happens to works when they fall into the public domain?

Mark your diaries. Here's advance notice of a seminar on the topic of "What happens to works when they fall into the public domain?", at which the thoroughly engaging Professor Paul J. Heald, of the University of Georgia Law School, will be presenting some of his thoughts and -- more importantly -- the fruits of some of his own research.

This seminar, organised under the auspices of the 1709 Blog, will be held on Wednesday 23 March, from 5.30pm to 7.00pm, at a venue to be confirmed but somewhere within Central London. If you're thinking of attending, please email me here and let me know (using the subject line 'Heald Seminar') so that I can try, as far as possible, to ensure that the number of people attending bears some correspondence to (i) the number of chairs available and (ii) the quantity of the refreshments.