Warren v Coombes
[1996] FCA 891
At a glance
Source factsCourt
Federal Court of Australia
Decision date
1993-03-05
Before
Kiefel J, Branson JJ
Source
Original judgment source is linked above.
Judgment (10 paragraphs)
he nature of a personal, intellectual challenge to him. " The trial concerned the rights to a trailer and tractor used to convey boats from a boat ramp at Mackay Harbour to storage at premises known as "The Boatyard'. Mr McHattan had since 1988 conducted a business known as "The Boatyard", which involved, amongst other things, towing vessels from the water by means of the trailer and storing them in a boat storage area some distance from the water as well as a ship workshop and associated matters. The trailer, described as a "Taipan" boat trailer, required a tractor to pull it. In the conduct of the boatyard, the trailer was an important item because the storage of boats necessitated the use of a trailer since most boat owners did not themselves have trailers. The income from the conveyance of boats was a not insubstantial part of the returns of the business of the boatyard. On 2 April 1993, Mr McHattan sold to Saramoa Charters Pty Ltd, the first respondent, the business which he had previously conducted for the sum of $160,000.00. Mr and Mrs Hill, the second and third respondents, are the directors and shareholders of Saramoa Charters Pty Ltd. In 1992, Mr McHattan had serious health problems, which had the consequence that he could not conduct the boatyard business. The primary judge described the central question of the trial as being: " The question is whether it was understood by the vendor and the purchaser, or at least the purchaser, that the trailer and tractor were sold as part of the business. " The appellant takes issue with the centrality of this question, but unless the sale of the business involved the trailer, and with that inclusion an implied licence to use the trailer in the business, there would be no answer to Mr McHattan's claim of infringement of his patent. Because of criticism by the appellant that the case as found by the trial judge was materially different from the case pleaded, it is necessary to have regard to the history of the litigation in a little detail. It is common ground between the parties that the trailer the subject of the declaration by her Honour is the subject of a patent held by Mr McHattan. On 1 September 1993, the appellant filed an application and a statement of claim alleging infringement of his patent and seeking injunctive relief under the Patents Act 1990. At the conclusion of the trial he was seeking, in addition to damages for infringement, the delivery up of the tractor and trailer or damages for their conversion and damages for diminution in value or for repairs necessary to the trailer, as well as an account of profits. Paragraph 11 of the statement of claim alleged that: " Subsequent to the 21st. of June 1993 and continuing to the date of the application...the Respondents and each of them have infringed 'the Patent' in the manner set out in the Particulars of Infringement, served with this Statement of Claim". On 8 November 1993, the respondents filed a Defence and Cross-claim. In paragraph 11(b) the respondents denied infringement and asserted: " (b) by contract in writing dated 2nd April 1993 the first respondent agreed to purchase from the applicant, for the sum of $160,000.00, the right, title and interest in and to a boat yard business carried on on premises situated at Lot 8 Harbour Road, Outer Harbour, Mackay in the State of Queensland, together with the goodwill of the business and the vendor's fittings and plant and equipment. " The paragraph then asserts that there was an oral agreement about 2 April 1993 that the plant and equipment would include the tractor and trailer, and there were further allegations that prior to the execution of that contract in writing, the applicant orally represented that the plant and equipment being sold to the first respondent included the tractor and trailer. The defence alleges an oral agreement that Mr McHattan would prepare the schedule to the written agreement, which would list the plant and equipment agreed to be sold and the stock-in-trade to be sold, but that Mr McHattan did not include in it the tractor and the trailer. It was then alleged that prior to the first respondent signing the written contract, Mr McHattan did not inform the first respondent that the said schedule did not include the tractor and the trailer. The respondents in paragraph 11(d)(vi) and (vii) pleaded: " (vi) the first respondent signed and settled the written contract relying on the applicant's representation that the plant and equipment being sold included the tractor and the trailer and on the assumption (induced by the applicant's failure as pleaded in sub-paragraph (v) hereof) that the schedule to the written contract included the tractor and the trailer; (vii) the applicant knew that when the first respondent signed the written contract and knew that when the first respondent settled the written contract it did so under the mistaken belief that the schedule included the tractor and the trailer; " Paragraph 11(e) set up 'mutual mistake', it being asserted: " ...the written contract did not include a reference to the tractor and the trailer. " Unilateral mistake is set up in paragraph 11(f). In Paragraph 11(f) of the defence, the respondents pleaded: " 11. ... (f) further or in the alternative - (i) it was the intention of the first respondent that the written contract of sale would include a reference to the tractor and the trailer as being plant and equipment sold by the applicant to the first respondent; (ii) the respondents repeat and rely upon the allegations contained in paragraph 11(d) hereof; (iii) when the first respondent signed the written contract it did so in the mistaken belief that the tractor and the trailer were included in the plant and equipment thereby sold; (iv) the applicant at the time that the first respondent signed the written contract knew of the first respondent's mistake as referred to in sub-paragraph (f)(iii) hereof but did nothing to bring that mistake to the attention of the first respondent; (v) the applicant did not inform the first respondent of its said mistake as it was the applicant's intention to take advantage of that mistake to the detriment of the first respondent; (vi) should it be determined that the contract between the applicant and the first respondent is wholly contained in the written contract dated 2nd April 1993 then the applicant has benefited from the first respondent's said mistake; (vii) in the premises, it would be unconscionable to allow the applicant to benefit from the first respondent's said mistake; ... " The defence to the infringement claim is encapsulated by the pleading in paragraph 11(g) of the defence: " the applicant, by agreeing to sell the trailer to the first respondent (without expressly reserving to the applicant any rights in respect of the patent) thereby impliedly licensed the first respondent by its officers, directors, agents and employees to use and repair the trailer without infringing the applicant's patent. " The case for Mr McHattan is that at no stage did the sale of the business include the tractor and trailer and that Mr and Mrs Hill at all times knew that this was the case. If, however, the Hills were mistaken in believing that the trailer and tractor were part of what was sold, that belief was engendered by a wrong interpretation of parts of the written agreement, which constitutes a mistake of law and not amenable to rectification. The trial judge found: " I accept that Mr and Mrs Hill believed at all times that they were purchasing a business which included, as essential pieces of equipment, the trailer and tractor. " The trial judge expressly rejected Mr McHattan's evidence in several crucial respects and, in particular, her Honour said: " I do not accept, as Mr McHattan says, that he had some days earlier told Mr Hewitt that the trailer and tractor were to be excluded. " The trial judge found that Mr McHattan knew prior to the Hills signing that the tractor and trailer were excluded, and said of his knowledge at the date of the execution of the contract by the first respondent that: " He then well knew that the Hills believed they were purchasing the business 'lock stock and barrel', which was not consistent with the exclusion of chattels important to its functioning and income. " The trial judge indicated that if it were necessary to order rectification of the contract she would do so, on the basis that a mistaken belief on the part of one party to the contract may still ground relief by way of rectification, where the circumstances show that the other, knowing that party to be labouring under a mistake as to a term, remains silent and permits that party to execute the document to their detriment: A. Roberts & Co Ltd v Leicestershire County Council [1961] Ch. 555; Johnstone v Commerce Consolidated Pty Ltd [1976] VR 463. After extensive reference to authority as to the basis for this jurisdiction, the trial judge said: " One could view the matter as necessitating holding Mr McHattan to his earlier representations, concluding that it would be