“40 … At its heart, GT’s case is that it was ideally placed to enjoy very substantial profits from its sole and exclusive rights to sell a valuable, highly sought-after, product. If Rouse and the [Conspiracy Defendants] had not acted in the way they did, effectively depriving the Claimants of its rights, those substantial profits would have been realised.”
“55. The proposed re-amendments simply set out further instances of allegations which are already in issue. The relevant matters concern: (a) Rouse’s provision of information to third parties about the identity of the party who had the right to sell and exploit the Product and use the relevant IP rights (paragraphs 108(a); (k)(1); (k)(5) and (k)(6) set out further examples). (b) Rouse having conflicting duties to [the Conspiracy Defendants] and to GT but preferring the interests of [the Conspiracy Defendants] (instances are at paragraph 108(j) and (k)). (c) A summary at paragraph 108 which pulls together under one heading how the actions of [sc. and] failures of Rouse are said to have supported and assisted the wrongdoings of [the Conspiracy Defendants].” (a) Rouse’s provision of information to third parties about the identity of the party who had the right to sell and exploit the Product and use the relevant IP rights (paragraphs 108(a); (k)(1); (k)(5) and (k)(6) set out further examples). (b) Rouse having conflicting duties to [the Conspiracy Defendants] and to GT but preferring the interests of [the Conspiracy Defendants] (instances are at paragraph 108(j) and (k)). (c) A summary at paragraph 108 which pulls together under one heading how the actions of [sc. and] failures of Rouse are said to have supported and assisted the wrongdoings of [the Conspiracy Defendants].”
“(1) The ‘cause of action’ is that combination of facts which gives rise to a legal right; (it is the ‘factual situation’ rather than a form of action used as a convenient description of a particular category of factual situation … (2) Where a claim is based on a breach of duty, whether arising in contract or tort, the question whether an amendment pleads a new cause of action requires comparison of the unamended and amended pleading to determine (a) whether a different duty is pleaded (b) whether the breaches pleaded differ substantially and (c) where appropriate the nature and extent of the damage of which complaint is made … (Where it is the same duty and same breach, new or different loss will not be new cause of action. But where it is a different duty or a different breach, then it is likely to be a new cause of action). (3) The cause of action is every fact which is material to be proved to entitle the claimant to succeed. Only those facts which are material to be proved are to be taken into account; the pleading of unnecessary allegations or the addition of further instances does not amount to a distinct cause of action. At this stage, the selection of the material facts to define the cause of action must be made at the highest level of abstraction. … (4) In identifying a new cause of action the bare minimum of essential facts abstracted from the original pleading is to be compared with the minimum as it would be constituted under the amended pleading … (5) The addition or substitution of a new loss is by no means necessarily the addition of a new cause of action … Nor is the addition of a new remedy, particularly where the amendment does not add to the ‘factual situation’ already pleaded …”
“49. As regards Stage 3, (‘arising out of the same or substantially the same facts’) a number of points emerge, particularly from Ballinger at [34] to [38]: (1) "Same or substantially the same" is not synonymous with "similar". (2) Whilst in borderline cases, the answer to this question is or may be substantially a ‘matter of impression’, in others, it must be a question of analysis … (3) The purpose of the requirement at Stage 3 is to avoid placing the defendant in a position where he will be obliged, after the expiration of the limitation period, to investigate facts and obtain evidence of matters completely outside the ambit of and unrelated to the facts which he could reasonably be assumed to have investigated for the purpose of defending the unamended claim. (4) It is thus necessary to consider the extent to which the defendants would be required to embark upon an investigation of facts which they would not previously have been concerned to investigate … At Stage 3 the court is concerned at a much less abstract level than at Stage 2; it is a matter of considering the whole range of facts which are likely to be adduced at trial … (5) Finally, in considering what the relevant facts are in the original pleading a material consideration are the factual matters raised in the defence …”