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The initial question to be determined is whether the Master's discretion miscarried and, if so, whether the matter being one dealing with practice and procedure, leave to appeal should be granted. A critical sentence in one of the Master's decisive paragraphs is that in which he says that there is a 'slight risk' of the information not being kept confidential. That was his assessment as to the extent of the risk and, because of his judgment in that regard, he was led to the conclusion that he should make the orders for inspection and the answers to interrogatories which he did.
In the light of the whole facts and circumstances of the case, I am of the opinion that the risk ought to have been assessed as significantly more substantial than slight. I think the evaluation of it as a slight risk did not give enough weight to the very real concerns of Hotrox. After all, Dr Franklin himself had, some 10 years ago, been one of the applicants for a patent in relation to an invention, in the very area of the process which Hotrox claims to undertake. I realise that 10 years is a lengthy period and that Dr Franklin's interests and activities may have changed. But he is, from a professional point of view, interested in the process - I do not mean financially - and he claims to be one of only two people in Australia who have sufficient expertise in the field to give evidence of the kind that is required of him in this case. Although the project upon which he embarked when the application for the provisional patent was lodged came to nothing, he would be less than human if he did not wish to take advantage of an opportunity to inspect a process which might show him a way of doing something which he was unable to do.
Of course, it may be that what will be demonstrated by any inspection which he has, is that Hotrox's process was no more successful than his own. That, indeed, is the reason why his evidence is required by the respondent. But, in an area such as this, it is difficult to escape the compelling statement made in the dictum of Hayne JA in the Mobil case earlier cited. Because of his professional interest, Dr Franklin would be most unlikely ever to forget, or put aside, what he learns on the inspection. It will stay forever as part of his professional know-how.
I recognise that Dr Franklin is not a trade rival of Hotrox. That distinguishes this case from the Mobil case. But each case must be dealt with on its own facts and circumstances. The fact that Dr Franklin was at one time an applicant for a patent in this very area is something which has to be given very substantial weight. That is what gives Mr Cole the very genuine concern which the evidence establishes that he has. A further factor is that the correspondence annexed to Mr Huston's affidavit establishes that, at one stage, it was proposed by the respondent that, not only Dr Franklin, but also Mr Pekin, should be allowed to inspect the Hotrox factory. Mr Pekin was the other applicant for the patent which has been referred to. The suggestion that Mr Pekin, as well as Dr Franklin, be allowed to inspect the premises would not have been likely to have increased Mr Cole's or Hotrox's confidence in the value of Dr Franklin's assurances that matters would be kept confidential. The fact that the suggestion that Mr Pekin inspect the premises along with Dr Franklin was eventually withdrawn, does not overcome the problem.
Nothing that I have said is intended to attribute any dishonest motive or intention to Dr Franklin. What has been said simply states the reality of the matter. I accept that Dr Franklin is now mainly engaged as a consultant and that he is not presently intending to embark upon any enterprise which would involve him in manufacturing charcoal by this or any other method. He is a professional adviser in this field and he appears to be retained by a number of large undertakings in the industry. But one can well imagine a situation in the future - and this was postulated in argument - in which Dr Franklin is asked about the possibility of doing something along the lines which Hotrox claims to do and, having gained the information he would gain on the inspection which he desires to carry out, would be in quandary as to whether, directly or indirectly, to make use of that information in advising his client. And there would be the danger that he may subconsciously disclose something which was covered by his agreement to keep matters learnt on the inspection confidential. It would seem to me that unless he declined to advise any client interested in pursuing a process similar to that of the respondent, there would always be the danger that he would, however unwittingly, make a disclosure which would imperil the confidentiality which he has agreed to preserve."