Where would such a motion be filed? Would this be a complaint to a Human Rights court or HE suing whomever took these pictures? Would a mere mortal be able to find the complaint?
No, unlikely. Nothing will have been filed anywhere (yet).
Most likely scenario is some people definitely know where HE is -or- a random on the street spotted him. Either way, someone's taken photos of him walking out of the grounds of his treatment centre or hospital (could be anywhere in the world by the way). Whoever has the photos has approached the mainstream media sites - the Sun the Daily Mail etc, trying to sell the photos. As the mainstream media can no longer afford to mess around they would have needed to see proof before they put an offer in. They know full well that they cannot publish a photo of HE coming out of a medical building (it's the one area where even though standing on a public street, it would comprise harassment and breach of privacy).
Since its *big news* and the newspaper would definitely want to buy and publish those images, they would first contact his PR company or lawyers for comment - in terms of 'we have photos of your client on a public footpath in Roehampton, can you confirm that he has now finished treatment and is no longer under medical care and would he like to give comment on this story?' Solicitor would rightly point out, 'actually that is our client walking on the footpath immediately adjacent the priory treatment centre where he is receiving treatment and is still under doctors orders, if you publish these images you will be in breach of x, y, z legislation and we will not hesitate to take legal action'. Then the newspaper may still buy the images from the photographer -or- may decline to purchase them but they definitely won't use them.
Problem for HE and his solicitors with this scenario is - the photographer can tell anyone he likes, in terms of verbal gossip, he can even show the photos to others as long as he doesn't publish to the public. So, he knows where HE is. His friends and contacts know. The newspapers staff and any photo agencies he approached also know.
It will be a matter of minutes before there's stories leaked IMO.