I was shocked to see that www.spypig.com patents are not found in patent search and my friend patented that procedure as his idea and submitted and received the patent rights.
Now can he send a notice to SpyPig to stop their service? or can he stop further websites like SpyPig?
SpyPig is a email notification system to find whether the recipients read the email or not.
The same way, if someone's idea was copied and patented is that person allowed to send them a notice to stop their service?