The Federal Court is due to rule this morning on the long-running Freedom of Information (FOI) dispute between Attorney-General George Brandis and his Labor counterpart Mark Dreyfus, over access to Senator Brandis' diary.

Key points: George Brandis appealing to Federal Court to overturn Mark Dreyfus' bid to access section of diary

George Brandis appealing to Federal Court to overturn Mark Dreyfus' bid to access section of diary Dreyfus want to see who A-G met ahead of funding cuts

Dreyfus want to see who A-G met ahead of funding cuts Mr Dreyfus says Senator Brandis "spectacularly failed" to make case for refusing access to diary

It is the latest development in the fight for access to the electronic calendar, which Mr Dreyfus first tried to gain access to in the wake of the 2014 federal budget.

Mr Dreyfus wanted to inspect the list of meetings Senator Brandis had with interest groups, ahead of what he has described as severe cuts to the community legal sector and arts industry.

His initial FOI request was blocked by the Attorney-General's chief of staff, who argued it would take too much time to process and interfere with Senator Brandis' day to day work.

That was because he would have to personally vet every entry before it was released, which was estimated to take hundreds of hours.

Mr Dreyfus, who has been representing himself throughout the case, disagreed and appealed the decision.

Justice Jayne Jagot of the Administrative Appeals Tribunal overruled the original decision, calling on Senator Brandis' office to reconsider the application in December last year.

But the Attorney-General argued it would set too serious a precedent, and appealed the decision to the Full Court of the Federal Court.

Last month, counsel for Senator Brandis told the three judges of the Federal Court that Justice Jagot should have given weight to the amount of time it would take the Attorney-General to consult any third parties in the diary entries on whether they would object to the information being released.

At the time, a spokesperson for Senator Brandis said the original decision by the Administrative Appeals Tribunal made findings with wide-ranging implications for the FOI system.

"Accordingly, it is in the public interest that there be judicial clarification of how the FOI system operates," the spokesperson said.

Mr Dreyfus has previously stated he was only seeking a basic list of the meetings, which should not take hundreds of hours to process.

In August, he argued Senator Brandis should respect the decision of the Federal Court if it found against him, and not waste taxpayer funds appealing the matter further to the High Court.