plaidoiries > oral arguments (FHS Bridge's FR/EN glossary).

Not as specific as listed for oral hearing, the latter maybe tautologous.

1. "arguments": another alternative for "submissions"
2. I don't think that "called for" is correct here (unless the text is rephrased)

"Before a claim reaches the stage of being heard, some procedures must be gone through. The plaintiff (the person bringing the case) has to put into writing the exact nature of his claim, is a document called particulars of claim. Likewise, if the defendant (the person against whom the case is brought), wishes to dispute what is alleged in the particulars of claim, he must set out the details in his written defence. The purpose of this is to identify the precise matters which are disputed, with a view to saving time.

"For example, imagine the plaintiff shopkeeper alleges in his particulars of claim that he sold some goods to the defendant consumer at a stated price. The defendant does not deny the sale, but claims that the goods were faulty. In this case the defence, put in by the defendant, admits the sale, but says that the goods were not up to standard. In this way, the plaintiff (shopkeeper) knows that he does not have to prove the facts about the sale they have been admitted by the defendant. Only facts which are not admitted have to be proved. The particulars of claim and the defence are called pleadings."
www.saslaw.org.uk/county-courts/procedures.php

"The main aim of written pleadings is to give fair notice of the basis of the case. We look at this first, but the aim of identifying the real issues should not be forgotten. By allowing parties to see clearly not only what is disputed but what is not disputed, good pleadings can save a lot of wasted time. It is important that parties understand precisely what it is that they are actually arguing about."
http://www.scottish-land-court.org.uk/diy-c01s03.html

Définition de Plaidoirie


'La plaidoirie est, devant une juridiction, la partie de l'intervention d'une des parties ou d'un avocat par laquelle sont exposées oralement ses demandes dites aussi "prétentions" et ses défenses, sont présentés les faits, les moyens de fait et de droit et les preuves qui sont destinés à emporter la conviction du tribunal. Le verbe correspondant est "plaider". Il ne s'applique qu'aux explications données par les parties ou par leur conseil, il ne s'applique pas à l'argumentation du représentant du Ministère Public. Le Procureur et les magistrats du parquet qui le substituent, ne plaident pas, ils "requièrent", on dit encore "qu'ils prennent des réquisitions". '
http://www.dictionnaire-juridique.com/definition/plaidoirie....

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Note added at 1 day1 hr (2012-11-01 11:00:49 GMT)
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As others have noted, the oral aspect of "plaidoirie" is essential. However, the preliminary nature of plaidoirie/pleadings, as against a full hearing of a case also seems essential. Though it seems that oral pleadings may be obsolete in the UK (the term is often associated with a "moot court"), they do seem to be used elsewhere.

www.ecojustice.ca › Media Centre › Media Release Files
"An outline of Will Amos's oral pleading, on behalf of Friends of the Earth, for Supreme Court of Canada hearing in AbitibiBowater v. ..."

www.lawgazette.co.uk/blogs/blogs/euro.../tips-appearing-cou...
"Written pleadings generally have more impact on the court than oral pleadings; ..."

https://eric.exeter.ac.uk/.../McAuliffe_...
" ... observations submitted and for all oral pleadings in the action. At present any of the 23 official languages of the European Union may be used ..."

www.humanrightsmootcourt.org/Guidelines.pdf
"1. Guidelines for Written Submissions and Oral Pleadings. These guidelines shall assist the teams while preparing their written submissions and oral pleadings."

www.familylawweek.co.uk › Home › Judgments › 2011 archive
"In their oral pleadings the Government argued that the Registered ... In their oral pleadings before the Court, the Government maintained that both the clear ... "

www.thesun.co.uk/sol/.../Wayne-Rooney-in-ban-appeal-D-day.h...
" ... Euro 2012 group stage games — may also speak on his own behalf in one of two “oral pleadings” permitted by the UEFA appeals process."

I feel that this is a typical example of a French expression that should be reformulated to make it sound 'English'