I read something of interest regarding leasing domains, thinkit was from this site. It is regarding trademarks and generics. So you have a generic domain that is good for leasing, someone comes along, leases it from you and builds a new brand. The new brand is successful, but instead of the company going down the option-to-buy route with you, they get a bit underhanded and decide that they can take ownership of the site because it is their brand. What would one have to do contractually to prevent this from happening ? How do you protect your rights to the domain and prove that you owned it even before the brand was created ?