I can't say its a patch, but on my server we made a plugin which logs actions for specific items, and displays a message to the user when they place or break them. I currently have it set up for arcane tables, quarrys, fabricators and project tables with the default being TNT. Easy to setup and adds in some really nice and easy to look at log files. It might not patch it, but I haven't had anyone dupe since!!!
My messages are simply: Your actions are being logged and dupers will be banned
I can upload it and an example config if you'd like?