Donald Trump was urged to “withdraw from Scotland forever” last night amid calls for quick action to get construction of the windfarm underway.
Environmental campaigners advised the businessman to “move on” in the wake of the Supreme Court ruling.
But as their cries came, the Trump Organisation revealed it had instructed its lawyers to take the fight to Europe.
North-east Labour MSP Lewis Macdonald said he hoped the case – if allowed to progress – would be thrown out once again.
He said: “He has tried every court in the land and they have all told him he was wrong and that he had no grounds.
“He should listen to the courts. These are not bodies you can buy just by throwing money at them.”
Richard Dixon, director of Friends of the Earth Scotland, described the step as “deeply disappointing” given the speed that European processes run.
He said Mr Trump’s “frivolous” legal challenges had already caused enough uncertainty, adding: “This is inevitably another long delay to a project that Scotland needs to get going.”
He added: “The UK Supreme Court has backed two previous rulings by the Scottish courts and Trump should now stop wasting everyone’s time and give up.
“It would be best all round if Trump realised that he is a laughing stock here and withdrew from Scotland forever.”
Speaking before the latest development, WWF Scotland director Lang Banks said schemes such as the one planned for off Balmedie had an important role to play in the “massive renewables revolution”.
He added: “Once up and running, this test facility will be ideally placed to help test the technologies needed to harness Scotland’s huge offshore renewables potential.
“Having failed in his attempt to undermine Scotland’s renewables ambitions, it’s now time for Mr Trump to move on.”
Scottish Greens MSP Patrick Harvie, the party’s energy spokesman, branded Mr Trump a “rich climate change denier”.
He added: “This is the latest rejection for an irrational bully whose brand is increasingly toxic.
“The Scottish Government consent is in place and I would urge all those involved to get cracking.”
Aberdeen Central MSP Kevin Stewart echoed his call for quick action so the north-east could remain at the cutting edge of renewable energy development.
Gary McGovern, energy and planning partner at legal firm Pinsent Masons, said developers would breathe a “sigh of relief”.
The case had “perpetuated a lingering doubt over longstanding legal principles”, he added.
Aberdeen City Council leader Jenny Laing also welcomed the judgement, saying the project had been a “long-standing priority” for the local authority.