I have some software that I (my tiny company) has been selling for 15+ years.  I just discovered yesterday that someone has been granted a patent on configuring my software to do essentially what it was designed to do.  The patent is complete with screenshots of the software, and though they tried to hide the title-bar to obscure it, they missed a few details that makes it obvious what product is in the screenshots.The person/company with the patent hasn't contacted me.  A few years ago they said they wanted to build a business around my solution, which I thought was cool.  But they certainly didn't claim a patent.Do I need to do anything as long as they don't come after me?