You have to talk to a lawyer. No one other than a IP attorney experienced in dealing with patent trolls will be able to give you accurate advice on this.
Also you should add "[ask HN]" to the beginning of your post.
edit: A good way to find a lawyer is to talk to good lawyers you have worked with in the past. They will not be able to help you themself if they practice in a different area, but will likely have referrals for someone who does.
Also you should add "[ask HN]" to the beginning of your post.
edit: A good way to find a lawyer is to talk to good lawyers you have worked with in the past. They will not be able to help you themself if they practice in a different area, but will likely have referrals for someone who does.