The question often asked, “Will I get sued if I build my own signs?” A few years ago, the question might have been answered “yes”. Now, however, both patents are nearing the end of their lives. So, feel free to sort out the details yourself. (I am not giving legal advice on what you should do. Please review the patents and make the decision you think is best. What I am saying is, “If it were me, I would not worry about the patents I might run up against.”
The links for both the black sign and magnet sign patents are listed here:
RENT IN DFW or START A BLACK SIGN RENTAL COMPANY 