Nova Chemicals Corporation v Dow Chemicals Company 2020 FCA 141 Stratas JA: Near JA /
Woods JJA dissenting, aff’g 2017 FC 350, 2017 FC 637 Fothergill J
2,160,705 / film-grade polymers / ELITE SURPASS
In an accounting of profits the infringer is required to disgorge its profits caused by the
infringement. In the standard approach causation is determined using the “but for” test, in which
the amount the infringer actually earned by using the infringing technology is compared with
what the infringer would have earned in the hypothetical world in which it used the best non-infringing option: Schmeiser 2004 SCC 34 [102]. As explained in last week’s post, Stratas JA’s
decision for the majority in Nova v Dow rejected “but for” causation in the context of an
accounting of profits. In so doing, he gave two thought-provoking examples which raise
foundational questions regarding the nature of the “but for” world. In this post and the next, I will
argue that it is not necessary to reject “but for” causation in order to address the issues raised by
Stratas JA’s examples.
The first example, which is the subject of this post, raises the issue of whether the law takes a
subjective or objective approach to the infringer’s behaviour in the “but for” world. As I
understand Stratas JA’s analysis, he is of the view that the “but for” test for causation requires a
purely subjective inquiry into what the particular infringer would have done but for the
infringement. I will argue that on the contrary, “but for” causation often incorporates an objective
element, both in the law generally and in the patent context. I will suggest that the prior caselaw
is consistent with an approach in which the “but for” world is constructed by asking what an
informed and prudent party in the position of the infringer would have done but for the
infringement. Such an approach would address the concerns raised by Stratas JA’s first example.
To turn to the details, Stratas JA provides two examples to illustrate the proposition that “[t]he
use of hypotheticals and the ‘but for’ test . . . has no place in an accounting of profits” [67]. In the
first, the infringer, but for the infringement, would have invested in speculative stocks:
[69] For example, if an infringer could prove in evidence that, but for the infringement, it
would have used its capital to invest in, say, Apple or Amazon before their market
ascendance then the infringer could retain the vast majority, if not all, of its profits. But
for the infringement, the infringer would have earned much more investing in Apple or
Amazon than selling the infringing goods. By Professor Siebrasse’s “but for” logic, the
infringer would not have to disgorge anything because using the infringing product was
actually detrimental to the infringer’s overall profitability.
[70] The reality is that infringers may not always pursue the next best non-infringing
alternative. It may be the case that without access to the patented product, the infringer
might have pursued an entirely different course, for example, speculative investments in
emerging tech companies, and would have lost everything.
I’ll call this the Apple / Amazon example. The reference is to my 2004 article, “A Remedial
Benefit-Based Approach to the Innocent-User Problem in the Patenting of Higher Life Forms”
(2004), 20 CIPR 79, that was cited with approval in Schmeiser [102].
Stratas JA emphasized throughout his decision that an accounting requires disgorgement of all
profits caused by the invention, and only profits caused by the invention: [27], [32], [39], [46],
[61], [ 62]. I agree. Stratas JA is evidently of the view that the value of the patented seed does not
depend on whether, but for the infringement, the infringer would in fact have invested in Apple
at its nadir or Yahoo at its peak. Again I agree. More broadly, I take his point to be that the value
of the invention should not necessarily be assessed on solely the basis of a strictly factual inquiry
as to what the particular defendant would have done but for the infringement. Here again, I agree.
However, Stratas JA offered this example to show that “[t]he use of hypotheticals and the ‘but
for’ test . . . has no place in an accounting of profits” [67]. That is, Stratas JA is evidently of the
view that the “but for” test for causation does not get us to the right result in the Apple / Amazon
example: “By Professor Siebrasse’s ‘but for’ logic, the infringer would not have to disgorge
anything because using the infringing product was actually detrimental to the infringer’s overall
profitability” [691]. From this I infer that Stratas JA is of the view that the use of a hypothetical
“but for” test for causation necessarily entails a subjective approach, requiring an inquiry as to
what the particular infringer would have done had it not infringed; therefore, in his view, if the
inquiry is not subjective, it is necessary to reject the “but for” test for causation. This is where I
disagree. The law of causation permits the use of an objective approach, or at least an objective
element, in assessing the defendant’s behaviour in the “but for” world, and the concern raised by
the Apple / Amazon example can be addressed within the standard framework by using an
approach that asks how a reasonable infringer in the position of the defendant would behave.
Now, a purely subjective approach is not as unreasonable as it might appear at first impression,
notwithstanding the intuitive appeal of the Apple / Amazon example. If a purely subjective
approach were used then in some cases, as Stratas JA pointed out, the profits to be disgorged
would be much less than the true value of the invention; an inventor who, but for the
infringement, would have gambled and won, would be better off than one who had invested
prudently [69]. On the other hand, as Stratas JA also pointed out, in some cases the award would
be higher than the true value of the invention, in cases in which the infringer would have
gambled and lost [70]. In theory, this should all come out in the wash. Sometimes the infringer
would win, sometimes it would lose, but these random deviations from the true value of the
invention would all average out. Since the patent incentive is prospective, the expected return to
invention would stay the same and incentive function of the patent system would not be
impaired.
However, there are two second order problems with a purely subjective approach. First, on the
facts of any given case, the award might fail to reflect the value of the invention if the infringer
would have behaved idiosyncratically. If a patentee received half the value of their invention, it
would be cold comfort to tell them that some other patentee in some other trial would get twice
what they deserved. Similarly, an infringer hit with an award much greater than the value of the
invention to them would not appreciate being told, “Don’t worry, some other infringer will get
off scot free.” Second, there is a selection bias problem. Patentees who anticipated that the
accounting award would be unduly low as a result of idiosyncratic behaviour by the infringer
would elect damages instead. This means that it would not all come out in the wash: the
accounting cases would disproportionately reflect cases in which the infringer would be required
to disgorge more than the value of the invention.
Thus, I agree that the Apple / Amazon example raises a real problem. But the solution is not to
abandon “but for” causation. Rather, it is to use an objective approach to the infringer’s
behaviour in the “but for” world.
So, in Mustapha 2008 SCC 27, the defendant owed a duty to the plaintiff and breached its duty
by supplying bottled water with a dead fly in it. This in fact caused significant mental harm to the
plaintiff. While the trial judge awarded damages, the SCC reversed, holding that the damages
suffered were too remote to be viewed as legally caused by the defendant’s negligence, unless it
could be shown that “a person of ordinary fortitude” would suffer serious injury in the same
circumstances: [18]. Thus, the trial judge erred by applying a subjective standard—looking solely
to the effect on the particular plaintiff—when an objective standard—looking to a person of
ordinary fortitude—should have been used. Now, Mustapha was a negligence case, and
foreseeability considerations are not relevant in intentional torts, and have not generally been
raised in patent infringement. But the broader point is simply that “but for” causation does not
inherently require a subjective inquiry into the effect of the wrong on the particular defendant.
Nor is the “but for” inquiry purely subjective in patent law generally. For example, if a patentee
cannot prove damages in the form of lost profits, it is entitled to damages in the form of a
reasonable royalty. The reasonable royalty is determined on the basis of a hypothetical
negotiation between the infringer and the patentee at the time of the infringement. This
hypothetical negotiation is not simply a reconstruction of what would have in fact happened but
for the infringement; on the contrary, it is commonly applied when it is clear on the facts that the
patentee would have refused to licence to the infringer on any terms. As the en banc Federal
Circuit remarked in the leading case of Rite-Hite v Kelly 56 F3d 1538, 1554 n13 (Fed Cir 1995),
the “willing licensor/willing licensee” characterization is “inaccurate, and even absurd, when, as
here, the patentee does not wish to grant a license.” Moreover, it is well established, at least in
US law, that the parties to the hypothetical negotiation are taken to bargain on the basis that the
patent was valid and infringed, even though parties to an actual negotiation would not have
known that the patent was valid and infringed, and so would normally be expected to allow a
discount to allow for the possibility of invalidity. As another example, it would seem that a
patented alternative will not be considered a legitimate alternative, even if the infringer would in
fact have used it: see Cefaclor 2018 FCA 217 [55] and here.
The problem of idiosyncratic defendant behaviour specifically has also been raised in the patent
infringement context. In Cefaclor 2018 FCA 217 the question was whether the putative NIA
would have been economically viable. Gauthier JA for the FCA held that while the subjective
perspective of the infringer may be relevant [72], it is not determinative (original emphasis):
[72] In my view, economic viability is not something that is assessed solely from the
subjective perspective of an infringer such as Apotex. . . .
[73] However, as I noted earlier, the court’s goal is to assess the real value of the
patented invention(s). Such value cannot be assessed on a purely subjective basis.
Evidently, the court must be satisfied that the NIA invoked was objectively an
economically viable substitute at the relevant time. To say otherwise would mean that the
value of a patent could be artificially reduced by an infringer who behaves in an
unorthodox manner, or whose adoption of a substitute is motivated by reasons other than
economic ones.
This seems to me to be a direct answer to the Apple / Amazon example. Gauthier JA identified
exactly the same problem raised by Stratas JA, and addressed it by holding that a purely
subjective approach to the “but for” world should not be used.
With that said, I do not want to endorse a strictly objective approach to the defendant’s behaviour
in the “but for” world. The main difficulty with an objective test is determining what is in fact
objectively reasonable. As Gauthier JA pointed out in Cefaclor, what the particular infringer
would have done helps inform what a reasonable party in the same position would have done
[72]. If the actual infringer is in fact reasonable, then the two inquiries will give the same result.
In the business context, at least, it is probably sound to presume that the particular infringer was
reasonable: see here. That means that even if we adopt an approach to infringer behaviour in the
“but for” world that is objective in principle, a subjective inquiry will almost always be necessary
and will often be determinative. In most cases it will difficult to disentangle whether the inquiry
is subjective or objective, and unnecessary to do so.
So, my point here is not to argue for a
specific objective test. Rather, my argument is simply that
it is not necessary to entirely reject “but for” causation to deal with
the issue of idiosyncratic
infringer behaviour. The “could have and would have” test for assessing
whether a putative non-infringing alternative may be considered was
originally set out in Lovastatin 2015 FCA 171.
While that test continues to develop through the case law, it provides a good framework for
balancing subjective and objective considerations in constructing the “but for” world.
Consequently, in my view the existing legal framework of “but for” causation is entirely capable
of addressing the problem raised by the Apple / Amazon example.
I’ll end with a couple of tangential notes. First, the issue of a subjective or objective approach to
the “but for” world was not decided in Schmeiser. The question in Schmeiser was the whether the
entire actual profits were to be disgorged or only the differential profits. It did not purport to
settle all the details of the way in which the differential profit approach should be applied, in the
same way that the SCC’s endorsement of “but for” causation in Athey [1996] 3 SCR 458 did not
settle the precise nature of the test in the context of psychological injury that was addressed in
Mustapha. Second, it is not clear to me why Stratas JA was of the view that the logic in my 2004
article would imply a subjective approach [69], given that the description I gave in the passage
quoted by Stratas JA at [68], suggested that the touchstone would be an objective one, of a
defendant acting in “a prudent and informed manner” while trying to maximize its profit without
infringing. With that said, I have to admit that my suggestion of an objective test in my 2004
article was largely fortuitous, as the focus of my argument was that the differential profits should
be disgorged, and not the entire actual profits. In any event, the issue needs to be addressed in
light of the case law as it has developed since Schmeiser, in cases in which these problems arise
on the facts.