The phrase "position upheld" is correct and usable in written English.
It is typically used to describe a situation where someone or some entity has maintained or defended a particular stance or viewpoint. Example: Despite facing significant opposition, the company's position on environmental conservation was upheld during the annual shareholders' meeting.
The Home Office turned down the freedom of information request, arguing that the information was "exempt from disclosure" – a position upheld by the Information Commissioner.
Josiah, who was in his dotage by the time he occupied the house on the eve of the American Revolution, was a Loyalist, a position upheld by his son, Samuel, a physician.
It has been the policy of British governments not to fund legal assistance for British nationals abroad on cost grounds, a position upheld by the Supreme Court in 2013.
But its legal position, upheld by the court, guarantees that the case will drag on into the new President's administration, which may be the essence of Microsoft's real strategy.
Along the way, one of Israel's two chief rabbis, Eliyahu Bakshi-Doron, nearly resigned after he was threatened with being "ostracized" by part of the strictly Orthodox world for his lenient position upholding the validity of the deed of sale.
The judges asked a number of questions generally supporting the government's position upholding the law.
– (PT) Our vote against the European Commission is a natural result of our disagreement with respect to its programme, the majority of the positions upheld in the hearings that have taken place, and the objectives and content of the Treaty of Lisbon itself which the Commission promises to defend, but with which we disagree.
(His position was upheld, 5 4, by the Supreme Court).
His position was upheld, which suggests that even before the Citizens United decision the restrictions against corporate campaign spending were elastic.
(Her position was upheld by the Supreme Court last week, but Justice Roberts again criticized her First Amendment stance).
If the N.L.R.B.'s position is upheld, this case could draw some clearer lines on what businesses can and cannot do to avoid dealing with unions.
