Slow progress was made until the final hours, as nations wrangled over the wording of an 89-page draft text, intending to cut it down to a more manageable size.
Under the final wording of the law, a draft version of which was obtained by The New York Times on Tuesday, there are some checks on the use of the powers, which permit the prime minister to order the detention of people deemed to be security risks, impose curfews and order house-to-house searches.
But HMRC said that it had been forced to take another look at the wording of the draft legislation after receiving a number of complaints about the definition of a "bank".
Greg Clark, the planning minister, yesterday offered to hold talks with the critics to discuss the wording of the draft National Planning Policy Framework, but he ruled out a U-turn.
By nightfall on Saturday, however, there was no news on progress in the talks, apart from Iranian media reports that the negotiations had hit a stumbling block over the wording of the draft agreement.
The process of granting a new Letters Patent usually takes around a month with the Crown Office often advising on the wording of the draft before the monarch puts her signature to the final copy.
"We are concerned that the wording of the draft leaves room for misunderstanding," says Fiona Nicholson of Education Otherwise.
The current wording of the draft bill requires the judge to review the 'process' undertaken by the home secretary in the same way applied to a judicial review".
He altered the wording of the draft so that the proposal came from the United States to Great Britain, rather than the reverse.
Talks aimed at a global agreement on climate change appeared stalled on Friday, with countries failing to agree on the wording of the draft texts that will form the outcome of the fortnight-long UN conference in Doha.
