If a website simply existing constitutes an offer, I wonder how damages would be calculated - I was thinking if it was an offer each time someone accessed it, then that would be the number of infringing offers
To expand on this in view of Isaac's post, I have no idea how you could calculate damages for offers to sell. If someone goes to the web site and receives the offer to sell through the web site, what are the lost profits (only for exceptional cases) or what is the reasonable royalty? -- i.e., the reasonable royalty for allowing someone to offer sales without actually allowing them to make the sales, that is, for offering only. Doing no more than merely offering to sell an infringing product without actually selling it would appear to cause no measurable loss.
It's a bit like bankruptcy law after the major overhaul obtained by financial institutions through very generous lobbying. Yes, it's illegal for them to attempt to collect a debt dismissed during bankruptcy, but the damages are limited to
actual damages. How much money do you lose when you receive a mean phone call from someone to whom you no longer owe anything? None. How many of those calls and letters would you collect before you could afford to go through a litigation over the issue? To answer this, simply divide the cost of litigation by the actual monetary losses of an improper phone call -- i.e., zero.
I can only imagine one sort of activity that might justify some sort of litigation over offers to sell. Back in about 1994, IBM announced their competitor to Windows 3.11 -- OS/2. Immediately, Bill Gates announced Windows 95 and added the typical MSFT puffery, something like it will blow OS/2 out of the water. So, waiting to compare Windows 95 to OS/2, no one bought OS/2 (well, virtually no one). It was more than a year before Windows 95 became available, even in pre-release beta form. It might have even been 1996 by that time. The term given that tactic (announcing things that don't yet exist such that, out of respect for your near monopoly, buyers don't buy competing products) was "vaporware".
It might be that damages for infringement can predate the release date to the extent pre-orders were offered for the loss in sales of OS/2. I have no idea how you'd determine how many copies of OS/2 were not purchased as a result of the vaporware announcement.
Regards.