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Prince Harry and Meghan Markle appear to be facing another delay as they set up their Archewell project, as they have run into problems in trademarking their chosen name.
Harry and Meghan want to trademark Archewell as well as Archewell Audio and Archewell Foundation, which make up the organisations they have set up after leaving their roles as senior royals.
But the US Patent Office has not yet approved all their requests, despite the process starting early last year.
The office has approved Archewell, but the couple have to go back and make more changes to their two other requests, for Audio and Foundation.
According to the latest documents registered online, the couple have to add a disclaimer to the copyright requests, to show they are not seeking to trademark the words 'Audio' or 'Foundation'.
Their application for Archewell Audio, which would look after their podcasts, also needs more clarification the papers said.
Harry, 36, and Meghan, 39, were asked to clarify that the "podcasts, audio programs, music, and audio books" they want to trademark are "entertainment based services".
They also have to clarify the nature of the "live stage performances" that they say Archewell Audio could hold.
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The Duke and Duchess of Sussex have been asked to do something similar with their application to trademark Archewell Foundation, as they must state that they don't want to trademark the word Foundation for their use only.
They also have to clarify what they mean by "web apps" in their application.
They have six months, from 25 June, to make the adjustments.
Archewell's website has been active for several months and the royal couple are already working through the foundation even though the trademark is not yet confirmed.
Harry and Meghan are currently on parental leave after welcoming their daughter Lilibet on 4 June. They offer their Archewell staff 20 weeks, so it's understood they are taking the same themselves.
Despite the hold-up, they announced a new member of staff last week as Rebecca Sananes joined Archewell Audio as head of audio.
Sananes had been the lead producer on New York Magazine’s Pivot tech podcast.
Harry and Meghan's copyright attempts ran into some problems last summer too, when they were told the applications were too vague.
A spokesman at the time told Yahoo UK "this is part of the normal back-and-forth of the trademarking process" and said it had not been refused.
The duke and duchess previously revealed the name for their organisation, Archewell, came from the Greek word Arche, which was also the inspiration for their son’s name.
Arche means "source of action" with well being described as "a place we go to dig deep".
Yahoo UK has contacted a spokesperson for Archewell.
Watch: Prince Harry set to return to the UK with Meghan for another Princess Diana memorial?