disclaimer: I'm not a lawyer, I'm not giving you advice, and you should talk to a lawyer.
Just remember one really important thing: letting people know that you have knowingly infringed on a specific patent increases the damages awarded to the patent holder. Never talk specifics unless you're talking to your own lawyer.
Um, or they can just ask if you knew. Not putting it in writing only counts if you're going to back it up with lies in court. Otherwise, if you knew, you knew.
Just remember one really important thing: letting people know that you have knowingly infringed on a specific patent increases the damages awarded to the patent holder. Never talk specifics unless you're talking to your own lawyer.