I still shout "rapist owned" each time i pass his business, as do my brother and my father, my sister privately shared her story with his daughter on facebook last year (his daughter is one year younger than my sister, the creep), basically destroying their relationship, and the cooking school my sister went to directly called all female student and ex-student to tell them to avoid his restaurant. I also scraped social networks (only public data, nothing illegal) for his activities two years ago but only found business contacts. Each of them still received a nice email though.
I will move back next month, so i will continue my shouting campaign harder after the pandemic end and hope his business can't survive covid. Since his restaurant will be between my place and the place i keep my boat, i'm pretty sure i can be successful.
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Honestly i can't say i will ever stop stalking him even if he had to sell his business. I'm thinking of sending him accusing emails on temp email accounts (scripted of course, my sister got herself back in one piece after a year and a half, and i even think she is now way stronger than she used to, i won't waste that much time for him).
Libel and slander laws are also real. If someone is actually making a false accusation, there's already legal ways to deal with it.
suing can cost money, time, effort, and may not able to necessarily clear your name even if you won.