I have now asked others including a solicitor and 2 copyright experts and the advice is roughly this:
Both sides need to behave in a reasonable manner. Much is made of the word reasonable.
If in the first letter I make clear my authorship and rights to the image in question I will have behaved reasonably. If the infringer then makes a reasonable offer he has behaved reasonably. The offer should be at least what I would have charged had the image been bought properly in the first place. I, and many other photographers, have a two tier pricing structure described in our T&Cs. (Mine is £250 for a limited period licence with the condition that the image keeps the IPTC data intact and that I am credited as the photographer. Without credit my fee is £500 for a one year licence.) As most infringers strip the IPTC data and give no credit their fee is at least £500. For very high profile uses I will charge more.
When the infringer has agreed to pay £500 per image they can then reasonably ask for an affidavit confirming my exclusive rights to deal with the matter. They can ask their lawyer to prepare a form of words which will satisfy them and I will sign it.
It is unreasonable for the infringer to make demands before agreeing to settle for a reasonable and acceptable sum.
According to one of the experts there is no legal requirement to go to extra proof beyond the first letter until court proceedings. If the infringer wants to 'play poker' with the case its up to him.
If the infringer has knowledge that I am not the legitimate rights holder they must act reasonably and inform me of their evidence straight away. This is why I always include the line "Should I, or any of my agents, have granted a licence to use this image can you please provide me with a copy of your licence agreement." I do this even when I am 100% certain that the image in question has never been with an agent. Believe it or not some infringers believe that Google Images are an agent for free images!
I have described my approach which as far as I know is the correct legal path to follow. I do not think we have had a statement from anyone who settled in full with Getty that they, Getty, would NOT sign a document saying they had exclusive rights. I do know that Corbis and Getty do ask photographers to sign an affidavit over and above the exclusive contract terms.
This is not legal advice. I am not a lawyer.
HI Bob, then we are in agreement, it was just my cakhandedness with phrasing that caused the issue, plus maybe your reading from a different angle. it appears we both agree then.
I posted a couple of posts above that all action has to be fair to both parties, in order for it to be legal. What I was saying was that if I said i was happy to pay with the proviso you rpovide the documentation I asked for (which you say you do, then we have a deal. is fair and reasonable. for a contract to be formed (whicjh is what settling does), the terms of the contract should be the same as your original offer to similar clients. i.e if you charge £500 for the stripped down version, and are asking £700 with £500 for the image and £200 costs, then it is not unreasonable to clarify the terms of the contract we are entering into.
At ALL times I have stated that people who just take images should pay, that is beyond question in my mind. Asking for clarification on the settlement, is also fair and reasonable.
So we are pretty much agreed on this issue.
Hopefully now we will see an end to the speculative invoicing fiasco that Getty and others have been running, because IMO it is very close to a scam and bordering on extortion (using the threat of punitive costs as a stick to force settlement), I know that in some cases Getty have ignored statements of 'take me to court of leave me alone' and there is a growing mass of people who are in a position to wipe the floor with the image houses who have ignored this and invaded the rights of individuals. *that is another story).
With regard the refusal to confirm sole rights, getty have point blank refused this, stating that they are under no legal obligation to do so until such time as they server documents to the court (which is correct).
However (there is always a however), if it later transpires that getty had easy access to this information, and simply refused to provide it, then a court would likely find that behaviour to be UN-reasonable, and that would of course not bode well for getty. if OTOH it was reasonable for them to refuse, the courts would side with getty.