Consideration
30In Spencer Bower and Handley, Res Judicata, 4th ed, Butterworths, 2009 the learned authors write:
A judgement (or order) by consent is a res judicata. The court is discharged from the duty of investigating or further investigating the matters and does not pronounce a judicial opinion; but at the request of the parties it gives judicial sanction and coercive authority to an agreement which, except by statute, could not otherwise operate as a bar. Judgements, orders and awards by consent are as efficacious as those pronounced after a contest in creating cause of action estoppel and merging the cause of action sued on.
31The causes of action claimed by Ms Serrafis in the Family Court proceedings merged in the Final Orders made by the Court on 31 January 2012; thereafter they had no independent existence (Blair v Curran [1939] 62 CLR 464). The question in issue is what causes of action merged in those orders.
32In Macquarie Bank Ltd v National Mutual Life Association of Australia Ltd (1990) 40 NSWLR 543 at 616 Powell JA said:
The principle upon which the doctrine of cause of action estoppel or res judicata is founded is that, once a cause of action has been put in suit and judgement has been entered upon it, the cause of action has merged into the judgement so that it is no longer available to be put in suit; and by way of extension, when the same facts support rights to differing remedies against the same defendant, the party having the benefit of such rights cannot recover a judgement giving a remedy in respect of more than one of them, the cause of action on both being merged in the judgement in the one (Emphasis added).
33His Honour's observations reflect the Advice of Lord Nicholls of Birkenhead in Tang Man Sit v Capacious Investments Ltd [1996] AC 514 where he wrote:
Faced with alternative and inconsistent remedies, a plaintiff must choose between them.
34At 558-559 Clarke JA in Macquarie Bank said:
The difficulty in determining whether, as in this case, the unsuccessful plaintiff is estopped from maintaining the second proceedings arises primarily from an uncertainty as to the meaning of the expression "cause of action". In Republic of India v India Steamship Co, Lord Goff referred to the principle stated by Diplock LJ in LeTang v Cooper to the effect that a cause of action consists of the minimum facts which a plaintiff is required in law to plead and (if traversed) prove in order to obtain the relief which he claims. This is a similar statement to one made by Williams J in Carter v Egg and Egg Pulp Marketing Board. However, in Anshun, Brennan J, in referring to the imprecision in the meaning of the term, said that it is sometimes used to mean the facts which support a right to judgement, sometimes to mean a right which has been infringed, and sometimes to mean the substance of an action as distinct from its form.
...
What I think is necessary is an examination of the factual circumstances relied upon to establish the right to relief in each case in order to determine whether there is a sufficient identity between them to found the conclusion that the same cause of action was in question in both cases. Again the fact that both claims arise out of the same incident may be most material.
35There can be no doubt that curial disposition of the litigation in the Family Court required findings as to whether or not the incidents of domestic violence alleged by Ms Serrafis had occurred. A finding either way would have created an issue estoppel preventing the unsuccessful party asserting to the contrary in any subsequent proceeding.
36I have concluded that, because the remedies claimed in the Family Court and the District Court are both monetary sums, and because the right to each remedy arises from the same facts, matters and circumstances, the judgement in the Family Court bars Ms Serrafis from prosecuting this action for damages.
37The additional matters alleged in the statement of claim (the knife incident in April 2008, and threats to shoot the plaintiff) are merely additional examples of the domestic violence which may have increased the value of the monetary adjustment claimed. In any event those matters were so relevant to the subject matter of the dispute in the Family Court that it was unreasonable not to have raised them in that litigation (Port of Melbourne Authority v Anshun Pty Ltd (1981) 147 CLR 589).
38If I am wrong in these conclusions, given the jurisdiction and practice of the Family Court to entertain common law claims for damages upon the same facts and circumstances that are to be canvassed in the statutory claim for relief pursuant to section 79, it was objectively unreasonable for Ms Serrafis (who is bound by the conduct of her solicitors) not to include a claim for damages in the earlier proceedings.