(viii) when one reads the whole of the Heads of Agreement in the light of the surrounding circumstances, one can see that there was great uncertainty about major matters.
21 The defendant's list looks long, and it is certainly much longer than the plaintiff's list. Although it contains some significant matters, when it is fully examined it is not quite as formidable. For instance, recital 4 is just that; a recital. Only limited use can be made in construing a document and I believe the same rule applies when one is looking at intention in recitals, especially when they conflict with operative parts of the document; see eg Halliday v Overton (1852) 14 Beav 467, 470; 51 ER 366, 367.
22 Secondly, the Heads of Agreement exudes the confidence of both parties that they will enter into a new agreement, not merely that they might. The parties realised that there needed to be a new agreement but they intended by the Heads of Agreement that the new agreement would come into force and the proceedings would be dismissed.
23 As to uncertainty, para 14 of the written submissions that were lodged by counsel for the defendant sets out the lack of essential terms and uncertainties. A copy of these submissions will be left with the papers. These submissions focus on clause 1C of the Heads of Agreement, although they do not entirely deal with clause 1C, which I will come to in a moment. They also consider that the definition in 1A(iii) of "rebatable on costs" is inclusive only and leaves undecided what other matters could be taken into account. Clause 1B(iii), which provides that payments of royalties for US sales to be made out of the US, does not indicate in what currency any payment should be made or where payment should be made.
24 There will often be cases in documents where the drafter has not thought of everything or where one can see an apparent contradiction or where matters have not been spelt out as clearly as possible. However, one does not lightly say that the parties did not intend to make a contract merely because there are those infelicities. Certainly when one comes to the point where at least one major matter has been omitted, as the former Chief Justice said in the Geebung case one cannot find a contract. It is a significant factor that there is incomplete coverage, but it is only one factor.
25 Of course, it goes without saying that the mere fact there are two factors in favour of there being a contract and eight against is no way to decide the case. One must look at all the factors together, look at the surrounding circumstances and say whether, objectively, the parties have at least made a provisional contract.
26 In my view, the circumstances were that the parties were settling litigation, they had come to court, they had doubtless thought about their chances of success and the issues deeply, and the surrounding circumstances suggest that they wanted to put an end to their disputes of the past once and for all and to get on with their common commercial life. This does tend to suggest that they were in the mood to decide once and for all what their commercial position would be; see Maconachie v Harpur (1993) 79 LGERA 75.
27 This is reinforced by the provision in the operative part of the document that the agreement is to bind, even though there is to be a formal agreement.
28 Mr Ryan SC, in his usual skilful manner, sought to avoid the semantic significance of the words used in 1F(i) by saying that the other factors, particularly recital 4, showed that the semantic significance was virtually nil. However, it does not seem to my mind that that was so. Despite the fact that there is incomplete coverage of various matters, it does not seem to me that the seriousness of those matters is as much as was contained in the submissions of counsel for the defendant.
29 Putting it all together, in my view the parties did intend that the agreement would at least be a provisional agreement pending the formation of a new agreement; that is, it was to operate as a contract between them, at least until it was subsumed in a new agreement containing those terms, plus whatever other terms the parties agreed on.
30 B. The next matter is whether the contract is void for uncertainty. It is a hard road for any commercial person to urge that a document that has been signed by or in front of solicitors on a formal occasion which purports to be an agreement is void for uncertainty. The Court will strain, as far as it legitimately can, to find a meaning rather than hold that it is void for uncertainty. It will only be if the Court cannot legitimately so find that it will find the document void for uncertainty; see Upper Hunter District Council v Australian Chilling and Freezing Co Ltd (1968) 118 CLR 429, 437.
31 I have already considered the broad headings of the uncertainty which is alleged. As I have said, these focus mainly upon clause 1C. That was a clause which provided, essentially, that in the event that the defendant sells its business or its intellectual property rights, including the plaintiff's invention, it will ensure that the purchaser continues to pay to perpetuity the plaintiff's royalties.
32 Mr Ryan SC and Ms Parry say that that is a fairly meaningless concatenation of verbiage, it is vague as to what is "its business" or "its intellectual property rights", and the surrounding circumstances show that there are other companies involved throughout the world exploiting the plaintiff's invention in respect of the majority of which the defendant does not have any shares, though most of its directors have at least shares in holding companies and that how could it ensure that the purchaser would continue to pay royalties?
33 The mere fact that someone enters into an agreement which, in the cold light of day, appears to be onerous or silly is not sufficient to hold that a contract is void for uncertainty. If someone has made a promise that that person finds almost impossible to fulfil, then that person just pays damages for breach. Of course, there are limits to the proposition that I have just put, but in an agreement which was intended to be replaced in due course by a later agreement, one allows a greater latitude. The overall intention of clause 1C was quite plain that, putting aside corporate structures, there had been an assignment of the patent to the defendant which was being exploited world-wide through various corporations and was producing a royalty flow. If there was an opting out by the defendant so that that royalty flow would not continue through it, then it was to do what it could - to put it weakly - or to make sure that - to put it strongly - the royalty flow continued.
34 Questions have been raised as to what would happen if the defendant licensed someone to exploit the rights rather than selling its intellectual property rights, but the mere fact that certain things could happen that the parties had not contemplated is not enough to find the contract void for uncertainty. One would have to work out whether there were any implied terms or whether, on a true construction of the words which the parties had used, that particular event fell one side of the line or the other.
35 I do not consider that the matters raised in the defendant's submissions are sufficiently weighty to say that the contract is void for uncertainty.
36 C. Two types of mistake are relied on as a ground for setting aside the contract. There was no actual cross-claim to set aside the Heads of Agreement but the way in which the case was argued it seemed to me that what was being put was that the contract should not be specifically enforced, as was the plaintiff's original claim, or, alternatively, should be rescinded because of these mistakes.
37 First, there was an alleged common mistake that the contract could be performed in such a way that royalties stemming from US patents could be the source of perpetual income flow and, secondly, there was the mutual mistake as to how the royalties flowing from the Californian subsidiary company of the defendant - putting it loosely - could be affected by the Heads of Agreement.
38 Various text books on the law of contract use the terms "common mistake" and "mutual mistake" in different ways, so I should make it clear that I am using the terms in the sense defined in the Seventh Australian Edition of Cheshire and Fifoot's Law of Contract at p 471; that is, a common mistake is a situation where both parties make the same mistake and the mutual mistake is where parties act at cross purposes.
39 Evidence was given by Professor Wiley of the UCLA Law School to the effect that under US patent law, as interpreted by the Supreme Court of the USA in Brulotte v Thys Co 379 US 29 (1964), an agreement to pay royalties on a patent after the patent had expired was unenforceable after the expiry. I have put that in an over-simplified form but that is how I understand the purport of the evidence.
40 I was also reminded that under s 145 of the Patents Act 1990 (Cth) provision is made for either party to give notice to put an end to the agreement in such circumstances after the patent has expired.
41 Accordingly, it is difficult, if US law applies, to have a binding agreement whereby the royalty flow from a patent will continue to go to the inventor after the expiry of the patent.
42 However, the present agreement was not one that was made under US law. It was made in New South Wales between a natural person and a New South Wales corporation. The agreement provided that US royalties would be paid outside the USA and I cannot see how necessarily the parties made any common mistake as to the operation of US law on the flow of income.
43 Even if they did, and even assuming that the parties or at least the plaintiff did intend perpetual income flow, it would not seem to me that a mistake in this area would be sufficiently material to be the sort of operative mistake that would enable the contract to be set aside.
44 There seems to be a distinction in the authorities between mistake that will vitiate a contract at common law and mistake which will enable equity to set a contract aside. The cases suggest that it is only if there is a case of res sua or res extincta or where the mistake is an essential and integral element to the subject matter (Bell v Lever Bros Ltd [1932] AC 161, 235), that the mistake will be operative; see also Grist v Bailey [1967] Ch 532, 537. If there be a mistake in the present case, the mistake is not of that fundamental nature.
45 However, the sort of mistake that will lead to equity setting aside the contract does not have to be in that limited class of case. Whenever there is a material mistake the Court may, in its discretion, on whatever terms it deems to be appropriate, set aside the contract; see eg Huddersfield Banking Co Limited v Henry Lister & Son Limited [1895] 2 Ch 273. However, again there must be a fairly fundamental mistake because the Court does not lightly set aside contracts, particularly commercial contracts which parties have seriously made. The sort of mistake that usually leads to this action by equity is a mistake that goes to the core property which is the subject of the agreement, such as was the case in Solle v Butcher [1950] 1 KB 671 and again in the Grist case.
46 In my view, there is not here such a fundamental or material mistake as would induce equity to set the contract aside.
47 So far as the alleged mutual mistake is concerned, it seems to me, with great respect, that it is reading too much into the letters of the solicitors immediately after the Heads of Agreement were made to say that as a matter of fact the parties were at cross purposes as to what would happen about a company called FCS California. The correspondence does show that the plaintiff's solicitors took the view that it would be best to have three agreements rather than what was originally contemplated, but it does not seem to me the material goes so far as to show that the parties negotiated and agreed to the Heads of Agreement under any mutual mistake.
48 Accordingly, the defence of mistake is not made out.
49 D. It follows that there is a contract. The contract has been repudiated. The plaintiff now has accepted that repudiation and he is entitled to damages.
50 As none of the counsel have directed their minds as to how the damages might be assessed for today's hearing but as it appears that there must be, in fact, some damages, the question of damages should either be left for a Master or for me to assess at a later date.
51 I will stand the matter over for mention before the Registrar on 4 May 2000.
52 I order that the defendant pay the plaintiff's costs of the proceedings to date, and reserve further costs.