Procuring cause dispute help

[littleMike]

What is the name of your state (only U.S. law)? MA

I am a licensed real estate agent. Recently I have helped my client to complete a property purchase. The deal was closed a few weeks ago. A few days ago, I received an attorney letter that another real estate broker claimed this broker had shown this property before me. I called this buyer, he admitted that this broker did show him the property first before me.
So the facts are:

1) another broker did show this property first, that's their base of procuring cause claim; there was no any signed contract between the buyer and this broker.
2) there were enough evidences this broker had shown the property;
3) I was not aware of this situation until very recently after the deal closed;
4) The other broker claims that I should have asked the buyer first if someone else had showing him first.

This another broker asks for 50% commission split, otherwise they will bring this to the court.

My question is how likely I will win or lose the case if it goes to the court.

Thanks.

 

[Zigner]

50/50, more or less. Don't you folks carry insurance for this sort of thing?

 

[Just Blue]

sigh....

PxHx.

 

[John Se]

Are you in a buyers broker/sellers broker state?

If so I assume that you have a buyers broker signed representation agreement, and the other broker does not.

Is that true? If so ignore the other broker, or ask them to produce in writing their buyer broker agreement.