Court Opinion

ID: 9939326
Source: CourtListenerOpinion
Date Created: 2024-02-09 20:00:50.690856+00
Date Added: 2024-06-11T13:40:56.780508
License: Public Domain

In the

     United States Court of Appeals
                 For the Seventh Circuit
                     ____________________
Nos. 22-2636, 22-2630, 22-2632, 22-2633, 22-2634, 22-2635, &
22-2637
LATONYA CANNON, et al.,
                                               Plaintiﬀs-Appellants,

                                 v.

ARMSTRONG CONTAINERS INC., et al.,
                                              Defendants-Appellees.
                     ____________________

         Appeals from the United States District Court for the
                      Eastern District of Wisconsin.
Nos. 07-c-0864, 11-c-0055, 11-c-0425, 14-c-1423 — Lynn Adelman, Judge.
                     ____________________

  ARGUED SEPTEMBER 26, 2023 — DECIDED FEBRUARY 9, 2024
                ____________________

   Before WOOD, SCUDDER, and ST. EVE, Circuit Judges.
    ST. EVE, Circuit Judge. This is a successive appeal of a series
of toxic tort cases brought by individuals allegedly harmed by
lead paint pigment. The cases include the claims of approxi-
mately 170 diﬀerent plaintiﬀs, most of whom are joined to-
gether in a single complaint. All the plaintiﬀs and all the cases
proceeded together in the same court, in front of the same
2                                             Nos. 22-2636 et al.

judge, and against the same lead paint manufacturers. The
same counsel represented each plaintiﬀ.
    To bring order to this sprawling array of litigants, the par-
ties and the district court devised a case management plan
under which groups of plaintiﬀs would try their claims in a
series of waves. The plaintiﬀs in the ﬁrst two waves, however,
met a concatenation of defeats here and in the district court,
resulting in the district court granting summary judgment for
the defendants on all claims. The court then extended those
rulings to the remaining 150+ plaintiﬀs on law of the case and
issue preclusion grounds.
    After careful review, we see no error in much of the court’s
reasoning. Most of these plaintiﬀs opted to proceed under a
single complaint, within a single case, which is now sunk after
summary judgment. But a small group of plaintiﬀs ﬁled their
own cases, and due process protects their right to try them.
For the reasons that follow, we aﬃrm the decision of the dis-
trict court in large part and reverse in small part.
                        I. Background
    This mass tort case involves approximately 170 plaintiﬀs,
spread over several actions, all alleging injuries stemming
from their exposure to white lead carbonate (“WLC”), a lead-
paint pigment. Each plaintiﬀ contends he was exposed to
WLC as a child during the 1990s and early 2000s, while grow-
ing up in Milwaukee homes that had lead-based paint on the
walls. Each seeks to hold several manufacturers of WLC (and
their successors) liable under state-law negligence and strict
liability theories.
Nos. 22-2636 et al.                                            3

A. Legal Background
     We begin with a brief overview of the legal framework
that supports the plaintiﬀs’ claims, which we addressed in de-
tail in our prior opinion. See Burton v. E.I. du Pont de Nemours
& Co., 994 F.3d 791 (7th Cir. 2021) (“Burton II”). In short, this
case is a kind of anachronism. For a brief moment, Wisconsin
law recognized a cause of action for WLC injuries based on a
“risk-contribution” theory. See Thomas ex rel. Gramling v. Mal-
lett, 701 N.W.2d 523 (Wis. 2005). That theory, blessed for pur-
poses of WLC litigation by the Wisconsin Supreme Court in
2005, essentially permitted plaintiﬀs to bring injury claims
even if they could not prove exactly who manufactured the
WLC that injured them. Id.; see also Burton II, 994 F.3d at 804–
05. As we explained in Burton II: risk contribution “modiﬁes
the ordinary rule in tort law that a plaintiﬀ must prove that a
speciﬁc defendant’s conduct caused his injury … by appor-
tion[ing] liability among the ‘pool of defendants’ who could
have caused the injury.” 994 F.3d at 802. Wisconsin recog-
nized such claims until 2011, when the Wisconsin legislature
eﬀectively overruled Thomas. See id. at 806; Wis. Stat.
§ 895.046. The Wisconsin legislature also attempted to make
its statute retroactive, but we rejected that eﬀort after ﬁnding
that retroactivity would violate the state’s due process guar-
antees. See Gibson v. Am. Cyanamid Co., 760 F.3d 600 (7th Cir.
2014). The result? From 2005 to 2011, WLC claims based on a
risk-contribution theory were viable, and approximately 170
plaintiﬀs entered the courthouse door. Burton II, 994 F.3d at
807.
4                                                    Nos. 22-2636 et al.

B. Procedural Background
        1. The Cases
    These cases began in 2007, after Glenn Burton, Jr., ﬁled a
complaint in Wisconsin state court against eight manufactur-
ers of WLC. The defendants removed the case to federal court.
Meanwhile, two more lawsuits, ﬁled by Ravon Owens and
Ernest Gibson, were similarly removed to federal court.
    More cases followed. In early 2010, Cesar Sifuentes ﬁled a
case directly in federal court. A year later, over 160 diﬀerent
individuals ﬁled a single complaint under Federal Rule of
Civil Procedure 20(a)(1), with Maniya Allen as the ﬁrst-
named plaintiﬀ. Not long after, Deziree and Detareion Valoe
jointly ﬁled suit. Finally, three plaintiﬀs from the Allen ac-
tion—Dijonae, Ty’Jai, and Jaquan Trammell—agreed to sever
their claims into a separate suit to cure a diversity problem.
Those plaintiﬀs also proceeded under a single complaint.
   The cases eventually proceeded against American Cyana-
mid Co.; E.I. du Pont de Nemours and Company, Inc. 1; NL
Industries, Inc.; the Sherwin Williams Company; Armstrong
Containers, Inc.; and the Atlantic Richﬁeld Company. Judge
Adelman ultimately presided over each case, and the same
counsel represented each plaintiﬀ. These separate cases, how-
ever, were never formally consolidated under Federal Rule of
Civil Procedure 42(a). 2

    1 E.I. du Pont de Nemours and Co. now goes by the name “EIDP, Inc.”

    2 Partial consolidation did occur at several points, largely because the

Gibson action proceeded in front of another judge before its eventual reas-
signment to Judge Adelman. The plaintiﬀs successfully moved to partially
Nos. 22-2636 et al.                                                         5

    Early on, the defendants jointly moved to dismiss or sever
all but the named plaintiﬀ in the Allen case (which, recall, in-
cluded approximately 160 individuals). The defendants ar-
gued that the Allen action improperly joined those plaintiﬀs
because they lived in separate cities and alleged separate in-
juries incurred at separate times—all of which required indi-
vidualized discovery and separate trials. The plaintiﬀs coun-
tered that joinder was proper because the claims involved
“numerous” common questions of law or fact. Speciﬁcally,
the plaintiﬀs argued that discovery on general causation
would be “similar, if not identical” for every plaintiﬀ, and that
common issues included whether the defendants “knew of
the hazards inherent in the white lead paint products at issue
when they marketed them to the general public in Wiscon-
sin.” “Proof of the failure to warn elements,” according to the
plaintiﬀs, was “particularly conducive to this common dis-
covery.”
    The district court agreed and denied the defendants’ mo-
tion to sever. The court reasoned that the Allen plaintiﬀs’
claims were suﬃciently connected because their injuries
stemmed from a common source—the defendants’ manufac-
turing of lead-based paint—and because their claims pre-
sented common questions of liability under a common the-
ory—risk contribution. While the court recognized that “indi-
vidual discovery and separate trials will likely be required,”
the court noted that it could accomplish both tasks “without

consolidate their cases under Rule 42(a) to settle their claims against a sin-
gle defendant, NL Industries, Inc.; to determine the defendants’ motions
to dismiss for lack of personal jurisdiction; and to decide motions for a
protective order.
6                                             Nos. 22-2636 et al.

the disadvantages attendant to dismissal or severance.” The
Allen plaintiﬀs thus continued under the single complaint.
       2. The Case Management Order
    All the plaintiﬀs jointly proposed a case management or-
der (“CMO”) that would sequence proceedings in piecemeal
fashion. Under the plaintiﬀs’ proposal, the parties would con-
duct a limited number of “bellwether” trials, comprising “se-
lect,” “representative” cases. The plaintiﬀs intended the CMO
to streamline the litigation by “allow[ing] for coordinated mo-
tion practice on issues present in all of the cases.” There were
“clearly some threshold legal issues that will, of course, apply
to all cases.” Such issues, the plaintiﬀs urged, “should be dealt
with once, not on a case-by-case basis.”
    Over the defendants’ objection, the court largely adopted
the plaintiﬀs’ proposal and entered a CMO under which trials
and discovery would proceed in a series of “waves.” Under
the CMO, several of the oldest cases—Burton, Owens, and
Sifuentes—would proceed to trial ﬁrst. We refer to these cases
as “Wave 1.”
    Next, the CMO instructed the parties to prepare eight ad-
ditional cases for trial concurrently with the Wave 1 proceed-
ings. From those eight cases, the parties had to select four for
trial (two each) after extensive discovery and motion practice.
The CMO did not identify speciﬁc plaintiﬀs to be included in
that wave, nor did it refer to the cases as “bellwethers.” The
parties ultimately selected three of the Allen plaintiﬀs (Latoya
Cannon, D’Angelo Thompson, and Tyann McHenry), and one
of the Trammell plaintiﬀs (Dijonae Trammell). We call these
four trial plaintiﬀs “Wave 2.”
Nos. 22-2636 et al.                                               7

       3. Wave 1 Summary Judgment and Trial
    Ahead of trial in the Wave 1 cases, the defendants ﬁled
motions for summary judgment on the plaintiﬀs’ negligence
and strict liability claims. Underpinning the defendants’ sum-
mary judgment arguments was the premise that the duty to
warn—a required element of both claims—was identical in
the negligence and strict liability contexts. The district court
found otherwise, and distinguished the duty to warn in the
negligence context from the duty to warn in the strict liability
context. See Burton v. Am. Cyanamid, 334 F. Supp. 3d 949, 961–
67 (E.D. Wis. 2018). The court held that in the negligence con-
text, the duty to warn turned on what the consumer knew at
the time he or she was exposed to WLC—in this case the 1990s
or early 2000s. Id. at 961. But in the strict liability context, ac-
cording to the district court, that duty turned on what the or-
dinary consumer knew at the time the defendants produced
WLC—which was much earlier, sometime between 1910 and
1947. Id. at 962.
    The diﬀerent duties meant diﬀerent fates for the negli-
gence and strict liability claims. The court granted summary
judgment for the defendants on the negligent failure-to-warn
claims. The evidence showed that paint manufactures had
been issuing warnings to consumers since 1955, and that by
the 1990s, caregivers were well aware that lead-based paint
was dangerous. Id. at 961. Thus, the court reasoned, the plain-
tiﬀs or their caregivers needed no further warning about the
dangers of lead dust. The plaintiﬀs never appealed this negli-
gence ruling.
   In contrast, the strict liability claims survived. The court
found that a jury could conclude that between 1910 and 1947
the public was not fully informed about the dangers of lead-
8                                               Nos. 22-2636 et al.

based paint, giving rise to a genuine issue of material fact as
to whether the defendants had a duty to warn consumers who
purchased paint during those years. Id. at 962–63.
    The Wave 1 plaintiﬀs proceeded to trial on those surviving
claims. At the close of evidence, Judge Adelman dismissed
American Cyanamid from the case for lack of personal juris-
diction. See Burton II, 994 F.3d at 811. The jury ultimately
found DuPont, Sherwin Williams, and Armstrong liable, and
awarded $2 million in damages to each plaintiﬀ. Id. The jury
found Atlantic Richﬁeld not liable. Id. The losing defendants
appealed.
    Before turning to that appeal, we note that American Cy-
anamid and Atlantic Richﬁeld sought to use their respective
victories at the Wave 1 trial to exit the litigation entirely, meet-
ing mixed results. American Cyanamid—having won dismis-
sal in Wave 1 for lack of personal jurisdiction—moved for dis-
missal from the remaining cases on issue preclusion grounds.
The district court granted that motion, reasoning that issue
preclusion was appropriate because of the plaintiﬀs’ shared
counsel, tightly coordinated litigation strategy, and extensive
opportunities to make their jurisdictional case.
    Defendant Atlantic Richﬁeld—whom the jury had found
not liable—similarly invoked issue preclusion, but it did not
escape so easily. The court denied Atlantic Richﬁeld’s motion,
noting that the plaintiﬀs might handle future trials with
greater care, and with better evidence. “In mass-tort cases like
these,” the court reasoned, “courts recognize that the parties’
evidentiary treatment of the issues is likely to become more
focused and thorough with reiteration, and therefore hesitate
to apply issue preclusion after only one or two trials.”
Nos. 22-2636 et al.                                               9

       4. Summary Judgment in the Remaining Cases
    While their Wave 1 appeal was pending, the defendants
moved for summary judgment against the Wave 2 plaintiﬀs.
The defendants seized on the court’s ruling on the negligent
failure-to-warn claims in the Wave 1 cases to argue that the
court should similarly grant summary judgment in their favor
in Wave 2. In response, the Wave 2 plaintiﬀs raised the white
ﬂag. They surrendered their negligence claims in a footnote,
which read:
   Sherwin-Williams initially argues that Plaintiﬀs have
   no claim for negligent failure to warn. Well aware of this
   Court’s previous order, Plaintiﬀs concede that they do not
   have surviving claims for negligent failure to warn.
    The court granted summary judgment against the Wave 2
plaintiﬀs on their negligent failure-to-warn claims. See Allen
v. Am. Cyanamid, 527 F. Supp. 3d 982, 996–97 (E.D. Wis. 2021).
But, as with Wave 1, the court permitted the Wave 2 plaintiﬀs
to proceed to trial on their strict liability claims. Id. at 995–96.
       5. The Wave 1 Appeal (Burton II)
    Then came this court’s decision in the defendants’ Wave 1
appeal. See Burton II, 994 F.3d 791. Most relevant here, we re-
jected the district court’s ﬁnding that the duty to warn in the
strict liability context diﬀers from that in the negligence con-
text. We concluded that the duty to warn in both types of
claims “depend[s] on what the ultimate consumer (i.e., the
plaintiﬀs or their caregivers) knew, rather than what consum-
ers in general knew at the time the manufacturer released the
product into the market.” Id. at 823.
    Our conclusion that the duties for both claims were iden-
tical led to a two-front victory for the defendants. First, we
10                                                    Nos. 22-2636 et al.

held that the court legally erred in ﬁnding that the defendants
had a duty to warn for purposes of strict liability, since it had
already ruled that they had no duty to warn on their negli-
gence claims. Id. Second, and because the plaintiﬀs had not
cross-appealed the court’s ruling on their negligence-based
claims, our holding compelled judgment as a matter of law
for the defendants on the strict liability claims. Id.
         6. Renewed Summary Judgment and Reconsidera-
         tion Motions
    Following Burton II, the remaining defendants ﬁled re-
newed motions for summary judgment—this time against all
the plaintiﬀs in all seven cases. 3 As to Wave 2, the defendants
argued that Burton II compelled summary judgment on the
strict liability claims since the district court had already
granted summary judgment against the plaintiﬀs on the neg-
ligence-based claims. That is, because the duties were identi-
cal, and because the district court had found there was no
duty to warn consumers in the 1990s and early 2000s about
the dangers of lead paint, that ﬁnding doomed both claims.
   The defendants also sought summary judgment as to the
remaining plaintiﬀs. To best understand each argument, it
helps to further subdivide those remaining plaintiﬀs because
they are situated diﬀerently.
   The ﬁrst group of plaintiﬀs consists of the remaining
plaintiﬀs from the Allen and Trammell actions who did not
participate in Wave 2. We refer to this batch of Allen and Tram-
mell plaintiﬀs—the non-Wave 2 contingent—as “Group 3.”

     3 The Wave 1 plaintiﬀs are not parties to this appeal.
Nos. 22-2636 et al.                                               11

    The second group of plaintiﬀs consists of those from the
Gibson and Valoe actions. These plaintiﬀs, unlike Group 3,
come from cases with no representative in the litigation thus
far. We call these plaintiﬀs “Group 4.”
    The defendants sought summary judgment against the
Group 3 plaintiﬀs on law of the case grounds, arguing that
they came from the same “case” as the Wave 2 plaintiﬀs and
so the court’s duty-to-warn determination applied with equal
force. As to the Group 4 plaintiﬀs, the defendants argued that
issue preclusion applied because duty to warn was a common
issue that the earlier waves of plaintiﬀs had fully litigated.
    All plaintiﬀs objected to the motions. Additionally, the
Wave 2 plaintiﬀs asked the court to reconsider its earlier neg-
ligence-based duty determination. 4 The motion for reconsid-
eration introduced new evidence and a new theory of duty
arising from a previously unmentioned threat posed by WLC:
that of lead dust—invisible particles of lead derived from the
breakdown of lead paint, paint chips, and other lead-based
products. The plaintiﬀs’ new evidence purported to show
that, although modern consumers may have been aware of
some of the dangers of lead-based paint, they were not so
aware of the speciﬁc dangers of lead dust. This lack of aware-
ness about lead dust, the plaintiﬀs argued, could give rise to
a duty to warn that would salvage their negligence claim.
   The district court denied the Wave 2 plaintiﬀs’ motion to
reconsider on several grounds. First, the Wave 2 plaintiﬀs had
previously conceded their negligence claims during the initial

   4 The plaintiﬀs requested reconsideration under Rule 54(b) or “any

other Rule or theory deemed appropriate.”
12                                          Nos. 22-2636 et al.

summary judgment round without pointing to any counter-
vailing evidence. Second, the countervailing evidence that the
Wave 2 plaintiﬀs had since produced did not qualify as “new”
for purposes of reconsideration because it was available all
along. The court determined that the plaintiﬀs were “well
equipped to argue” during the initial summary judgment
round that the defendants had a duty to warn consumers
about lead dust, but instead “made a strategic choice” to forgo
their negligence claims.
    As to Group 3, the district court found that the law of the
case doctrine properly applied. The court reasoned that while
the Allen and Trammell plaintiﬀs each had their own claims,
they elected to join those claims in the Allen and Trammell ac-
tions. They were thus formally parties to those two cases.
Moreover, the court reasoned, it was fair to bind Group 3 to
its Wave 2 rulings because those rulings concerned a common
question of law or fact: whether the defendants had a duty to
warn consumers in the 1990s and early 2000s. Allowing
Group 3 to separately relitigate the common issue “would de-
stroy the eﬃciency that provided the justiﬁcation for joinder
in the ﬁrst place.” The court further determined that none of
the exceptions to the law of the case doctrine applied.
    As to Group 4, the district court found that collateral es-
toppel principles precluded the Group 4 plaintiﬀs from reliti-
gating the duty-to-warn issue. Applying Wisconsin preclu-
sion law, the court reasoned that the duty-to-warn question
was adequately litigated, and that the Group 4 plaintiﬀs were
suﬃciently in “privity” with the prior plaintiﬀs. The court
held that the Group 4 plaintiﬀs had an “obvious interest” in
the earlier waves because “the plaintiﬀs were prosecuting
claims against the same defendants under identical legal
Nos. 22-2636 et al.                                          13

theories in front of the same court and the same judge, who
had been managing all cases jointly.” The court also noted
that the same counsel represented the Group 4, Wave 1, and
Wave 2 plaintiﬀs, which suggested that the Group 4 plaintiﬀs
“approved of the tactics and strategy employed in the prior
action.” Last, the court pointed out that it previously had ap-
plied issue preclusion against these same plaintiﬀs in deter-
mining that it lacked personal jurisdiction over American Cy-
anamid.
   In the end, the district court granted the defendants’ sum-
mary judgment motion on all claims. The district court denied
the plaintiﬀs’ motion to alter or amend its judgment under
Rule 59(e). It added, however, that to the extent the law of the
case doctrine did not apply to Group 3, it would reach the
same result on issue preclusion grounds.
                         II. Analysis
     The three remaining batches of plaintiﬀs—Wave 2, Group
3, and Group 4—each appeal the district court’s grant of sum-
mary judgment against them. The Wave 2 plaintiﬀs contend
that the district court erred in denying their motion to recon-
sider. The Group 3 plaintiﬀs maintain that the law of the case
doctrine does not apply to them. And the Group 4 plaintiﬀs
argue that applying issue preclusion against them violates
due process. Additionally, all plaintiﬀs think we got questions
of Wisconsin state law wrong the ﬁrst time around, see Burton
II, 994 F.3d at 817–25, and they ask us to revisit that decision
or certify the questions to the Wisconsin Supreme Court. We
take each argument in turn.
14                                              Nos. 22-2636 et al.

A. Wave 2 Plaintiﬀs
    We begin with the Wave 2 plaintiﬀs, who argue that the
district court erred in rejecting their motion to reconsider. As
noted above, the centerpiece of that motion is “new” evidence
regarding lead dust, which purports to show that, although
modern consumers might have been aware of the dangers of
lead paint, they were not so alert to the threats of lead dust.
We review the district court’s decision to deny a motion for
reconsideration for an abuse of discretion. See KAP Holdings,
LLC v. Mar-Cone Appliance Parts Co., 55 F.4th 517, 528 (7th Cir.
2022).
    We have said many times before that “[a] party may not
use a motion for reconsideration to introduce new evidence
that could have been presented earlier.” Cincinnati Life Ins. Co.
v. Beyrer, 722 F.3d 939, 956 (7th Cir. 2013) (quoting Oto v. Metro
Life Ins. Co., 224 F.3d 601, 606 (7th Cir. 2000)); see also Caisse
Nationale de Credit Agricole v. CBI Indus., Inc., 90 F.3d 1264, 1269
(7th Cir. 1996) (“Such motions cannot … be employed as a ve-
hicle to introduce new evidence that could have been ad-
duced during the pendency of the summary judgment mo-
tion.” (quotation marks omitted)). Rather, “[a] party seeking
to defeat a motion for summary judgment is required to
wheel out all its artillery to defeat it.” Caisse Nationale, 90 F.3d
at 1270 (quotation marks omitted). Evidence kept in reserve,
whether through strategy or inadvertence, supplies no basis
for reconsideration. See id.
    The lead dust evidence undeniably falls into the category
of preexisting-but-newly-desirable evidence. As the district
court recognized, this evidence was available to the Wave 2
plaintiﬀs when they opted to concede their negligence claims
at summary judgment. It is therefore inert on reconsideration.
Nos. 22-2636 et al.                                                         15

    Rather than argue otherwise, the plaintiﬀs primarily con-
tend that the district court should have granted their motion
for reconsideration because the legal landscape shifted after
our decision in Burton II. They insist that this court “changed
the rules” when it held that strict liability and negligent fail-
ure-to-warn claims shared the same duty standard, and that
the court should therefore permit them to relitigate the negli-
gence-based claims.
    While it is true that motions for reconsideration may be
appropriate where there has been a “controlling or signiﬁcant
change in the law,” Bank of Waunakee v. Rochester Cheese Sales,
Inc., 906 F.2d 1185, 1191 (7th Cir. 1990) (citation omitted), no
such change occurred here. Burton II had everything to do
with strict liability and nothing to do with negligence. Our
ruling aﬀected only what the defendants had appealed: the
district court’s determination of the duty to warn for strict li-
ability claims. Burton II, 994 F.3d at 821–23. We did not disturb
the district court’s ruling on the plaintiﬀs’ negligence-based
claims. Indeed, we even noted that the negligence claims were
not under consideration because the plaintiﬀs “ha[d] not ap-
pealed” them. Id. at 823. Burton II therefore cannot support a
motion to reconsider the court’s negligence ruling. 5

    5 We add that Burton II did not work any “change in the law” that

would trigger the exception to the law of the case doctrine. The district
court’s duty determination in the strict liability context is not a precedent
and established no law that we could have altered in Burton II. See Midlock
v. Apple Vacations W., Inc., 406 F.3d 453, 457 (7th Cir. 2005) (“[A] district
court decision does not have stare decisis eﬀect; it is not a precedent.”);
United States v. Arterbury, 961 F.3d 1095, 1105 (10th Cir. 2020) (rejecting the
premise that “a district court can set the ‘law’ for change-of-law
16                                                      Nos. 22-2636 et al.

    We recognize that the Wave 2 plaintiﬀs may have con-
ceded summary judgment to the defendants and elected not
to appeal the district court’s ruling on their negligent failure-
to-warn claims because they thought they would succeed on
their strict liability claims. While that may have seemed a
sound strategic decision at the time, the fact that our ruling in
Burton II proved that decision costly does not provide
grounds for reconsideration. See Caisse, 90 F.3d at 1270; see also
Fannon v. Guidant Corp., 583 F.3d 995, 1003 (7th Cir. 2009)
(ﬁnding no abuse of discretion where the plaintiﬀs “appar-
ently made a strategic decision not to put their new evidence
into the record”). The district court did not abuse its discre-
tion in denying the Wave 2 plaintiﬀs’ motion for reconsidera-
tion.
B. Group 3 Plaintiﬀs
   We turn next to the Group 3 plaintiﬀs—the remaining,
non-Wave 2 plaintiﬀs from the Allen and Trammell actions.
The district court granted summary judgment against Group
3 on law of the case grounds. 6 For the reasons that follow, we
ﬁnd no error in that decision.

purposes”). Moreover, Burton II did not change Wisconsin law but rather
applied established Wisconsin law principles. See Burton II, 994 F.3d at 822
(“[W]e and other courts applying Wisconsin law have treated [the duty to
warn for negligence and strict liability claims] as materially identical.”); cf.
Arterbury, 961 F.3d at 1105 (concluding that “appl[ying] long-established”
principles does not “change the law”).
     6 The district court alternatively held that issue preclusion would ap-

ply to the Group 3 plaintiﬀs. Because we aﬃrm the district court’s decision
on law of the case grounds, we do not reach that alternative holding.
Nos. 22-2636 et al.                                            17

    “The doctrine of law of the case establishes a presumption
that a ruling made at one stage of a lawsuit will be adhered to
throughout the suit.” Avitia v. Metro. Club of Chi., Inc., 49 F.3d
1219, 1227 (7th Cir. 1995) (citations omitted). The doctrine is
discretionary, “not an inﬂexible dictate.” Chi. Joe’s Tea Room,
LLC v. Village of Broadview, 894 F.3d 807, 818 (7th Cir. 2018)
(citations omitted)); see also Peterson v. Lindner, 765 F.2d 698,
704 (7th Cir. 1985) (“[Law of the case] must yield to rational
decisionmaking.” (citing 20 A.L.R. Fed. 13 (1974)); Avitia, 49
F.3d at 1227 (“But [law of the case] is no more than a presump-
tion, one whose strength varies with the circumstances; it is
not a straitjacket.” (citation omitted)). Generally, however, a
party must point to a “good reason” to abandon the court’s
earlier ruling. Tice v. Am. Airlines, Inc., 373 F.3d 851, 853 (7th
Cir. 2004); see also 18B Charles Alan Wright, Arthur R. Miller
& Edward H. Cooper, Federal Practice and Procedure § 4478
(3d ed. Apr. 2023 Update) (hereinafter “Wright & Miller”)
(“The standards announced for departing from the law of the
case commonly demand strong justiﬁcation.”). Such “unusual
circumstances” justifying departure from the doctrine include
(1) substantial new evidence introduced after the ﬁrst review,
(2) an intervening change in the law, and (3) a clearly errone-
ous decision. See Kathrein v. City of Evanston, 752 F.3d 680, 685
(7th Cir. 2014) (quotation marks omitted).
    Here, the law of the case doctrine properly applies to the
Group 3 plaintiﬀs because they were part of the same “case”
as the Wave 2 plaintiﬀs and have consistently litigated that
way. See Jarrard, v. CDI Telecomms., Inc., 408 F.3d 905, 911–12
(7th Cir. 2005) (“[A]s most commonly deﬁned, the [law of the
case] doctrine … posits that when a court decides upon a rule
of law, that decision should continue to govern the same is-
sues in subsequent stages in the same case.” (quoting
18                                             Nos. 22-2636 et al.

Christianson v. Colt Indus. Operating Corp., 486 U.S. 800, 815–16
(1988)). All the plaintiﬀs in the Allen and Trammell actions—
Wave 2 included—intentionally decided to join together un-
der Rule 20 and proceed within those two complaints. Thus,
when the Wave 2 plaintiﬀs conceded their negligence claims
at summary judgment, that concession on a common issue
bound the Group 3 plaintiﬀs. As the district court correctly
noted: the Group 3 plaintiﬀs may have their own claims, but
they chose to bring those claims within the cases of Allen and
Trammell. The district court’s ruling on the common duty
question therefore became law of the case that appropriately
applied to the Group 3 plaintiﬀs. See Bell v. Publix Super Mar-
kets, Inc., 982 F.3d 468, 489 (7th Cir. 2020) (noting that “courts
and parties may choose to manage [their] cases”—such as
through consolidated complaints—“in ways that can … give
up the separate identities of the original suits” (citing In re Re-
frigerant Compressors Antitrust Litig., 731 F.3d 586, 588 (6th Cir.
2013)).
    The plaintiﬀs urge us to ignore the formal relationship be-
tween them because only some of them proceeded with dis-
covery. Their theory is that, even if the Group 3 plaintiﬀs were
technically parties to the same case as the Wave 2 plaintiﬀs, the
district court’s “bellwether” treatment of the Wave 2 plaintiﬀs
functionally severed them from the Allen and Trammell com-
plaints they came from. In essence, they contend the district
court “eﬀectively created two separate litigations” when it
placed the Wave 2 plaintiﬀs on their own track to trial.
    The plaintiﬀs correctly note that the law of the case doc-
trine does not apply to severed claims. See Gaﬀney v. Riverboat
Servs. of Ind., Inc., 451 F.3d 424, 441 (7th Cir. 2006) (“As a gen-
eral matter, Rule 21 severance creates two discrete,
Nos. 22-2636 et al.                                                        19

independent actions, which then proceed as separate suits for
the purpose of ﬁnality and appealability.”); Fed. R. Civ. P. 21.
Moreover, we have held that Rule 21 severance can occur in
the absence of a “formal order.” See Rice v. Sunrise Express,
Inc., 209 F.3d 1008, 1014 n.8 (7th Cir. 2000). In Hebel v. Ebersole,
for example, we recognized severance despite the court’s fail-
ure to formally invoke Rule 21. 543 F.2d 14 (7th Cir. 1976). It
was enough there that the district court used the term “sev-
ered” in a pretrial order and had issued a judgment as to one
of claims. Id. at 17. And in Rice v. Sunrise Express, we found
severance even where the district court did not issue an order,
invoke Rule 21, or use the word “sever” at all. 209 F.3d at
1013–16 & n.8. Severance is eﬀective, we held, so long as “the
evidence shows that the district court intended to sever the
parties and the parties understood that severance had oc-
curred.” Rice, 209 F.3d at 1014 n.8; cf. Ravenswood Inv. Co., L.P.
v. Avalon Corr. Servs., 651 F.3d 1219, 1223–24 (10th Cir. 2011)
(construing a district court order that “severed and retained
herein” three separate claims as not severing the case, but ra-
ther retaining the claims “in the single, original case”). 7

    7 The plaintiﬀs cite neither Hebel nor Rice in support of their functional

severance argument, and instead rely on a Sixth Circuit case, Edmonds v.
Smith, 922 F.3d 737 (6th Cir. 2019). Edmonds, a habeas case involving the
separate habeas petitions of two co-defendants, is an inapt comparator
that does not even reference severance. Id. at 738–39. It simply stands for
the unremarkable proposition that “diﬀerent habeas actions brought by
diﬀerent petitioners are diﬀerent cases.” Id. at 739.
20                                             Nos. 22-2636 et al.

    Here, however, there is no indication that either the dis-
trict court or the parties intended severance to occur. There is
also no evidence that the parties understood otherwise.
     We start with the district court. The plaintiﬀs primarily
argue that, despite the CMO’s silence on the legal basis for
setting aside the Wave 2 plaintiﬀs for trial, “it is clear that the
court’s action was analogous to severance under Rule 21.”
The CMO reveals no such intent on the part of the district
court. The only meaningful evidence is the court’s use of the
word “cases”—rather than “claims”—in the CMO to describe
the Wave 2 plaintiﬀs. But we do not ﬁnd that characterization
dispositive in the context of the history of this litigation,
which shows that the court was committed to keeping the
plaintiﬀs under one action, as they requested. Indeed, in re-
sponse to the defendants’ motion to sever the Allen plaintiﬀs’
claims, the plaintiﬀs themselves described “[p]roof of the fail-
ure to warn elements” as being “particularly conducive” to
common resolution. Thus, when the court expressly rejected
the defendants’ motion to sever, it was defending the plain-
tiﬀs’ choice to collectively litigate the common questions of
law and fact that permitted joinder in the ﬁrst place. We there-
fore do not construe the CMO as showing any intent to sepa-
rate the Allen and Trammell actions, and neither did the dis-
trict court.
    The plaintiﬀs also point out that the district court stayed
discovery in the Group 3 cases, and the Wave 2 plaintiﬀs ad-
vanced toward a separate trial (from which a separate appeal
presumably would have followed). None of this is determina-
tive of severance. The district court just as easily could have
held separate trials in the Wave 2 cases under Rule 42(b) and
entered judgment under Rule 54(b), which permits the court
Nos. 22-2636 et al.                                             21

to enter “a ﬁnal judgment as to one or more, but fewer than
all, claims or parties” in an action. See Fed. R. Civ. P. 54(b);
Fed. R. Civ. P. 42(b); Gaﬀney, 451 F.3d at 442 n.18 (“[A]n order
of separate trials [under Rule 42(b)] does not result in the ﬁl-
ing of separate cases. Instead, it simply leads to two or more
separate factual inquiries in the context of a single, properly
joined case. No matter how many separate trials the court
may order, they remain part of a single case.” (quoting 4
Moore’s Fed. Practice § 21.06 (2005)). Similarly, Rule 42(b)
also permits the court to stay discovery issues or claims
within a single case. See Ellingson Timber Co. v. Great N. Ry.
Co., 424 F.2d 497, 499 (9th Cir. 1970) (“It is implicit [under Rule
42(b)] that the court also ha[s] power to limit discovery to the
segregated issues.” (citations omitted)). And while the court
acknowledged that “individual discovery and separate trials
will likely be required,” in the same breath it made clear that
“these things can be accomplished without the disadvantages at-
tendant to dismissal or severance.”
    Several more points bear mention. First, the court did not
create new case captions or case numbers for the Wave 2
plaintiﬀs’ claims, and instead continued to issue its rulings in
the Wave 2 litigation—including its order granting summary
judgment to the defendants on the negligent failure-to-warn
claims—under the captions of the Allen and Trammell actions.
Second, the court did not issue a separate judgment against
the Wave 2 plaintiﬀs when it entered ﬁnal judgment in this
case. Finally, we ﬁnd it telling that the capable district court
at no point described the Wave 2 plaintiﬀs as having been
“severed” from their Group 3 counterparts. See Hebel, 543 F.2d
at 17. Quite the opposite. In its ruling, the district court re-
jected Group 3’s severance theory as “clearly incorrect” and
insisted that the Wave 2 plaintiﬀs were at all times proceeding
22                                                    Nos. 22-2636 et al.

within the Allen and Trammell actions. Although that kind of
Monday-morning characterization is not dispositive and
could not erase a severance that had otherwise taken place,
see Gaﬀney, 451 F.3d at 442, “[w]hen a United States District
Judge states what occurred in his or her courtroom on a par-
ticular occasion, that statement is certainly worthy of [this
court’s] acceptance.” Rice, 209 F.3d at 1015.
    Our conclusion that the district court did not intend to
sever the actions is also consistent with the conduct of both
parties. Most obviously, the plaintiﬀs insisted from the begin-
ning that all plaintiﬀs in the Allen and Trammell cases were
properly joined and should proceed together. There is no in-
dication that the plaintiﬀs sought to backtrack from that
choice when they requested the CMO. Rather, the plaintiﬀs
advertised that their proposed sequencing would “provide
additional eﬃciencies,” including “coordinated motion prac-
tice on issues present in all of the cases.” Indeed, they pointed
out that certain “threshold legal issues” would “of course …
apply to all cases,” and they urged that these common issues
“be dealt with once, not on a case-by-case basis.”
   In sum, we cannot conclude that either party thought a
severance had occurred under these circumstances. 8 Nor can

     8 At oral argument, the plaintiﬀs directed our attention to several doc-

uments in which the defendants insisted that issue preclusion should not
apply in these cases. The plaintiﬀs also noted that the district court had
earlier denied Atlantic Richﬁeld’s motion for summary judgment based on
issue preclusion, in part because “the parties’ evidentiary treatment of the
issues is likely to become more focused and thorough with reiteration.”
These documents speak to issue preclusion, not law of the case. They may
have everything to do with the Group 4 plaintiﬀs, but they have nothing
to do with the Group 3 plaintiﬀs. We do not consider them here.
Nos. 22-2636 et al.                                            23

we say that the district court intended to sever the claims. The
law of the case doctrine therefore properly applies. The plain-
tiﬀs may not seek relief from the consequences of streamlined
litigation that they themselves initiated, promoted, and de-
fended.
    The law of the case doctrine exceptions do not save the
plaintiﬀs. Their “new” lead dust evidence does not satisfy the
“new evidence” exception because that exception applies
only when the proposed new evidence was “previously un-
discoverable.” See United States v. Sumner, 325 F.3d 884, 891
(7th Cir. 2003); Vidimos, Inc. v. Wysong Laser Co., 179 F.3d 1063,
1065 (7th Cir. 1999) (evidence must be new “and heretofore
undiscoverable” to trigger the exception); Aquinnah/Gay Head
Cmty. Ass’n, Inc. v. Wampanoag Tribe of Gay Head (Aquinnah),
989 F.3d 72, 86 (1st Cir. 2021) (“A party may avoid the appli-
cation of the law of the case doctrine only by showing that …
signiﬁcant new evidence, not earlier obtainable in the exercise
of due diligence, has come to light ….” (quotation marks omit-
ted)). The plaintiﬀs readily concede that their new evidence
has been available from the get-go, so it cannot provide
grounds for relief.
    The plaintiﬀs’ contention that our decision in Burton II
constitutes an “intervening change in the law” also fails.
Kathrein, 752 F.3d at 685. As we have already explained, Bur-
ton II worked no change in the controlling law.
    We therefore conclude that the Wave 2 and Group 3 plain-
tiﬀs are part of the same case for law of the case purposes, and
no exception to that doctrine applies. The district court did
not abuse its discretion in applying the law of the case to
Group 3.
24                                            Nos. 22-2636 et al.

                         *      *      *
    The impact of our conclusion on the scope of this litigation
is not lost on us. Aﬃrming the district court’s grant of sum-
mary judgment against Group 3 calves a considerable chunk
from a once-sizeable mass of plaintiﬀs. Indeed, after all is said
and done in this appeal, just three plaintiﬀs will remain.
    That consequence is unavoidable given the Allen and
Trammell plaintiﬀs’ choice to proceed under just two com-
plaints. In making that choice, the Wave 2 and Group 3 plain-
tiﬀs entered an all-for-one, one-for-all arrangement on com-
mon issues, and at all times remained tethered under their
jointly ﬁled complaints.
    No doubt an earnest interest in eﬃciency motivated the
plaintiﬀs’ decision to proceed in this manner. A litigant’s
shortcuts, however, can cut both ways. When plaintiﬀs join
together under one complaint, they opt for trial convenience
and the expeditious determination of all disputes over the
chance to litigate all questions on an individual basis. See Bell,
982 F.3d at 489; 7 Wright & Miller, supra, at § 1652. Perhaps
for this reason, many courts have disfavored multi-party join-
der in products liability cases. See, e.g., In re Accutane Prods.
Liab. Litig. MDL No. 1626, 2012 WL 4513339, at *1 (M.D. Fla.
2012) (“Many federal courts hold that products liability cases
are generally inappropriate for multi-plaintiﬀ joinder because
such cases involve highly individualized facts.”); see also 12
Sheila L. Birnbaum et al., Business and Commercial Litigation
in Federal Courts § 128:4 (5th ed. Nov. 2022 Update)
(“[W]here individual parties’ claims involve separate under-
lying events, such as where two or more unrelated plaintiﬀs
each alleges that she experienced an injury after using the
same product, or similar products made by diﬀerent
Nos. 22-2636 et al.                                           25

defendants, joinder of those parties and claims into a single
action may not be appropriate because the facts giving rise to
each plaintiﬀ’s claims will be diﬀerent.”). This is not to say
that joinder was in any way improper here. Rather, we simply
stress that the exceptions to the law of the case doctrine do not
oﬀer an out from that tactical gamble. Cf. Burley v. Gagacki, 834
F.3d 606, 619 (6th Cir. 2016) (plaintiﬀs’ “strategic decision”
not to contest an issue “precluded plaintiﬀs from making it an
issue during subsequent proceedings”). There is nothing un-
reasonable about holding Group 3 to what it signed up for but
now wishes it had not.
C. Group 4 Plaintiﬀs
    We turn next to the Group 4 plaintiﬀs. These plaintiﬀs—
Ernest Gibson, Deziree Valoe, and Detareion Valoe—were not
parties to the Allen and Trammell actions, either as members
of Wave 2 or Group 3. They instead ﬁled their own cases,
which, pursuant to the case management order, the district
court stayed pending the earlier waves of trials. The Group 4
plaintiﬀs now seek to litigate for themselves whether the de-
fendants had a duty to warn under a lead dust-based theory
of liability. The district court denied them that opportunity,
instead granting summary judgment against them on issue
preclusion grounds. After careful consideration, we reverse.
     Issue preclusion, or collateral estoppel, “bars ‘successive
litigation of an issue of fact or law actually litigated and re-
solved in a valid court determination essential to the prior
judgment,’ even if the issue recurs in the context of a diﬀerent
claim.” Taylor v. Sturgell, 553 U.S. 880, 892 (2008) (quoting New
Hampshire v. Maine, 532 U.S. 742, 748 (2001)). Federal common
law governs the preclusive eﬀect of a federal court judgment.
Id. at 891. In diversity cases like this one, “federal law
26                                            Nos. 22-2636 et al.

incorporates the rules of preclusion applied by the State in
which the rendering court sits.” Id. at 891 n.4 (citing Semtek
Int’l Inc. v. Lockheed Martin Corp., 531 U.S. 497, 508 (2001)).
    Under Wisconsin law, “[o]nce an issue is actually and nec-
essarily determined by a court of competent jurisdiction, that
determination is conclusive in subsequent suits based on a
diﬀerent cause of action involving a party to the prior litiga-
tion.” Paige K.B. ex rel. Peterson v. Steven G.B., 594 N.W.2d 370,
374 (Wis. 1999) (quoting Montana v. United States, 440 U.S. 147,
153 (1979)). Where, as here, a party seeks to preclude a non-
party, Wisconsin courts apply a two-step analysis. “The
threshold issue is whether [the] litigant [to be precluded] was
in privity or had suﬃcient identity of interests to comport
with due process.” Id. at 377 (internal alterations omitted)
(quoting Ambrose v. Cont’l Ins. Co., 560 N.W.2d 309, 314 (Wis.
1997)). If so, the court asks whether applying issue preclusion
would be fundamentally fair. Id.
    The question before us is thus whether the Group 4 plain-
tiﬀs were in privity or had suﬃcient identity of interests with
the Wave 2 plaintiﬀs such that applying issue preclusion
against them comports with due process. “Due process re-
quires that the litigant had suﬃcient opportunity to be
heard.” Id. (citing Parklane Hosiery Co. v. Shore, 439 U.S. 322,
327 n.7 (1979)). As a general matter, nonparties have not had
a “full and fair opportunity to litigate” their claims, and so
applying issue preclusion against them “runs up against the
‘deep-rooted historic tradition that everyone should have his
own day in court.’” Taylor, 553 U.S. at 892–93 (quoting Richards
v. Jeﬀerson County, 517 U.S. 793, 798 (1996)). It is therefore “a
violation of due process for a judgment to be binding on a lit-
igant who was not a party or a privy and therefore has never
Nos. 22-2636 et al.                                              27

had an opportunity to be heard.” In re Paternity of Mayonia
M.M., 551 N.W.2d 31, 35 (Wis. Ct. App. 1996) (quoting Park-
lane Hosiery, 439 U.S. at 327 n.7).
    “Privity exists when a person is so identiﬁed in interest
with a party to former litigation that he or she represents pre-
cisely the same legal right with respect to the subject matter
involved.” Pasko v. City of Milwaukee, 643 N.W.2d 72, 78 (Wis.
2002). When the nonparty is not “so closely aligned with a
party in the prior proceeding as to represent the same legal
interest or the litigant’s interests cannot be deemed to have
been litigated in the prior proceeding, the litigant’s due pro-
cess rights would, as a matter of law, be violated were a court
to apply issue preclusion.” Paige, 594 N.W.2d at 378.
    Our task sitting in diversity is to “use our own best judg-
ment to estimate how the Wisconsin Supreme Court would
rule as to its law.” Valerio v. Home Ins. Co., 80 F.3d 226, 228 (7th
Cir. 1996); see also In re Zimmer, NexGen Knee Implant Prods.
Liab. Litig., 884 F.3d 746, 751 (7th Cir. 2018) (“When interpret-
ing state law, a federal court’s task is to determine how the
state’s highest court would rule.” (quoting Rodas v. Seidlin, 656
F.3d 610, 626 (7th Cir. 2011)). Yet Wisconsin caselaw oﬀers lit-
tle guidance on how its preclusion rules operate in coordi-
nated personal-injury actions. The district court largely based
its holding on a single case from the Wisconsin Court of Ap-
peals, Jensen v. Milwaukee Mutual Insurance Co., 554 N.W.2d
232 (Wis. Ct. App. 1996), but the Jensen court did not mean-
ingfully discuss the privity requirement or due process at all.
    There are also signiﬁcant factual diﬀerences between that
case and this one. Jensen concerned the propriety of applying
issue preclusion across subsequent negligence actions
brought by a husband and wife against an insurance
28                                                  Nos. 22-2636 et al.

company following a single car accident. 554 N.W.3d at 233–
34. This case, however, involves several coordinated cases in
which the plaintiﬀs are unrelated and their injuries do not
stem from a single incident. And unlike in Jensen, where the
wife “actively participated” in her husband’s action as a “crit-
ical witness,” id. at 235, the Group 4 plaintiﬀs here played no
similar part in the prior proceedings. At best, they agreed to
be bound by the court’s rulings in prior cases. But Jensen oﬀers
no direction on how and when consent might support the ap-
plication of issue preclusion against a nonparty. In other
words, Jensen is both analytically meager and factually distin-
guishable. We are disinclined to import its holding here.
    Because Jensen does not inform the outcome of this case,
we look to the Supreme Court’s decision in Taylor v. Sturgell,
553 U.S. 880. See In re Zimmer, 885 F.3d at 751 (“Absent any
authority from the relevant state courts, the federal court shall
examine the reasoning of courts in other jurisdictions ad-
dressing the same issue and applying their own law for what-
ever guidance about the probable direction of state law they
may provide.’” (cleaned up)). Taylor, of course, arose under
federal common law and is only persuasive here. See 553 U.S.
at 893 n.6; In re Zimmer, 884 F.3d at 751. That said, there are
good reasons to think the Wisconsin Supreme Court would
follow Taylor—including that the court recently embraced
that decision while applying its own state preclusion rules. 9
See Clarke v. Wis. Elections Comm’n, 998 N.W.2d 370, 392 n.23
(Wis. 2023). In our view, the state supreme court’s approval
of Taylor (and our reliance on it here) makes sense given the

     9 We ﬁnd no Wisconsin authority in the ﬁfteen years since Taylor sug-

gesting that Wisconsin state courts disapprove that decision.
Nos. 22-2636 et al.                                            29

congruence between Wisconsin’s preclusion law and that of
the federal common law. The essential inquiry under both is
whether precluding the nonparty violates his or her due pro-
cess rights. Compare Paige, 594 N.W.2d at 377 (“The threshold
issue is whether such a litigant was in privity or had suﬃcient
identity of interests to comport with due process.” (cleaned
up)), and In re Estate of Rille ex rel. Rille, 728 N.W.2d 693, 707
(Wis. 2007) (“[Issue preclusion] is ‘bottomed in guarantees of
due process which require that a person must have had a fair
opportunity procedurally, substantively, and evidentially to
pursue the claim before a second litigation will be pre-
cluded.’” (quoting Precision Erecting, Inc. v. M & I Marshall &
Ilsley Bank, 592 N.W.2d 5, 12 (Wis. Ct. App. 1998)), with Taylor,
553 U.S. at 891 (“The federal common law of preclusion is, of
course, subject to due process limitations.” (citing Richards,
517 U.S. at 797)). As the Wisconsin Supreme Court has said,
“[t]he due process clauses of the United States and Wisconsin
Constitutions ‘prohibit a court from granting preclusive eﬀect
to a prior determination of an issue without the precluded
party having had the opportunity to contest that issue.’” Paige,
594 N.W.2d at 378 (emphasis added) (quoting Parker v. Wil-
liams, 862 F.2d 1471, 1474 n.1 (11th Cir. 1989)). Thus, while
Taylor reﬂects the federal common law approach to issue pre-
clusion, the close parallels between that approach and that of
Wisconsin state law lead us to predict that the Wisconsin Su-
preme Court would look to Taylor in answering the question
presented here.
    Taylor is a particularly appropriate lodestar because it is
the Court’s most recent thorough exploration of nonparty is-
sue preclusion. The question there concerned whether a court
could bind nonparties under a theory of “virtual representa-
tion” based on an “identity of interests and some kind of
30                                                   Nos. 22-2636 et al.

relationship between parties and nonparties.” Taylor, 553 U.S.
at 901. The Supreme Court unanimously rejected that theory,
explaining:
     An expansive doctrine of virtual representation …
     would “recogniz[e], in eﬀect, a common-law kind of
     class action.” That is, virtual representation would au-
     thorize preclusion based on identity of interests and
     some kind of relationship between parties and nonpar-
     ties, shorn of the procedural protections prescribed in
     [Supreme Court precedent] and Rule 23. These protec-
     tions, grounded in due process, could be circumvented
     were we to approve a virtual representation doctrine
     that allowed courts to “create de facto class actions at
     will.”
Id. at 901 (quoting Tice v. Am. Airlines, Inc., 162 F.3d 966, 972–
73 (7th Cir. 1998)). Recognizing the “fundamental nature” of
the general rule against nonparty preclusion, the Court ob-
served that it had “endeavored to delineate discrete excep-
tions that apply in ‘limited circumstances’”: (1) nonparty
agreement to be bound in a prior action; (2) nonparty control
over the prior action; (3) adequate representation of the non-
party by the party to the judgment in the prior action; (4) a
substantive legal relationship between the party to the judg-
ment in the prior action and the nonparty; (5) relitigation of
the prior action through a proxy; and (6) the existence of a
special statutory scheme providing for nonparty issue preclu-
sion. 10 Id. at 893–95, 898 (quoting Richards, 517 U.S. at 762 n.2).

     10 The Court stressed, however, that its list of exceptions did “not …

establish a deﬁnitive taxonomy” and was “meant only to provide a
Nos. 22-2636 et al.                                                   31

The virtual representation doctrine did not ﬁt within any of
these exceptions, and the Court objected to abandoning them
in favor of an “amorphous balancing test” that would be “at
odds with the constrained approach to nonparty preclusion
[its] decisions advance.” Id. at 898.
    Taylor supplies a helpful framework for our analysis. As
the Court did there, we ask whether applying issue preclusion
to Group 4 ﬁts within any of the recognized categories of ex-
ceptions to the general rule against nonparty issue preclusion.
Three are clearly inapplicable to the facts here: there is no sub-
stantive legal relationship between the Group 4 and Wave 2
plaintiﬀs, the Wave 2 plaintiﬀs are not simply relitigating
their claims through Group 4, and there is no statute at issue
purporting to permit preclusion. The remaining three catego-
ries of exceptions—nonparty agreement to be bound, control,
and adequate representation—require some discussion. We
take each in turn.
        1. Agreement to be Bound
   Nonparties may freely choose to forgo their day in court.
As the Supreme Court has said, “[a] person who agrees to be
bound by the determination of issues in an action between
others is bound in accordance with the terms of his agree-
ment.” Taylor, 553 U.S. at 893 (alteration in original) (quoting
1 Restatement (Second) of Judgments § 40 (1980)). “Agree-
ment” in this context can be either explicit or implicit. Id. at
894 n.7 (citations omitted).

framework for [its] consideration of virtual representation.” Taylor, 553
U.S. at 893 n.6.
32                                           Nos. 22-2636 et al.

    The paradigmatic example of nonparty issue preclusion
by consent appears in multiparty disputes. “[I]f separate ac-
tions involving the same transaction are brought by diﬀerent
plaintiﬀs against the same defendant, all the parties to all the
actions may agree that the question of the defendant’s liability
will be deﬁnitely determined, one way or the other, in a ‘test
case.’” Id. at 893 (quoting David Shapiro, Civil Procedure: Pre-
clusion in Civil Actions 77–78 (2001)).
    Here, there is no evidence the Group 4 plaintiﬀs explicitly
agreed to be bound by the district court’s duty-to-warn deter-
mination in the Wave 2 cases. While the defendants rely on
the CMO as showing the Group 4 plaintiﬀs’ consent, that re-
liance is misplaced. Neither the plaintiﬀs’ motion nor the
CMO mentioned preclusion.
    The CMO also does not support the conclusion that the
Group 4 plaintiﬀs impliedly consented to be bound. As a gen-
eral matter, courts are reluctant to ﬁnd implied consent to
nonparty issue preclusion, given the due process guarantees
at stake. See generally 18A Wright & Miller, supra, at § 4453
(“Great care should be taken, however, to ensure that the cir-
cumstances actually warrant the implication that there was in
fact an agreement to be bound. For the most part, implied con-
sent is not found.”); Shapiro, supra, at 78 (cautioning that
“courts should be hesitant to rely on notions of ‘implied con-
sent’”); Restatement (Second) of Judgments § 40 (1982)
(“While a party may agree to refrain from exercising his right
to a day in court in return for being spared the burden of ac-
tive litigation, no such agreement should be inferred except
upon the plainest circumstances.”). The uncertainty sur-
rounding the preclusive scope of the CMO gives us no reason
to shed that reluctance.
Nos. 22-2636 et al.                                                33

   The defendants point out that the plaintiﬀs acknowledged
that certain threshold “legal issues” applicable to all cases
should be dealt with once, and that the existence of a duty to
warn is one such common question of law. Yet answering that
question involves applying law to fact. See Strasser v. Transtech
Mobile Fleet Serv., Inc., 613 N.W.2d 142, 154 (Wis. 2000)
(“Where the parties agree upon the facts, the existence of a
duty presents a question of law.”). It would be one thing to
hold Group 4 to the court’s determination of how that duty is
deﬁned in negligence cases. It is entirely another to deny them
the chance to present their own evidence showing that such a
duty existed. Absent clear evidence to the contrary, we are
skeptical that Group 4 intended the CMO as a wholesale sur-
render-by-implication of their due process rights to litigate
dispositive factual issues, for themselves, in their own cases.
     That conclusion is consistent with the widely accepted
principle that bellwether trials in separate, aggregated cases
are typically non-binding. See In re E.I. du Pont de Nemours &
Co. C-8 Personal Injury Litig., 54 F.4th 912, 938 (6th Cir. 2022)
(Batchelder, J., concurring in part and dissenting in part) (“In
practice, [bellwether] results are generally non-binding ab-
sent an agreement to the contrary between the parties.” (citing
Eldon E. Fallon et al., Bellwether Trials in Multidistrict Litigation,
82 Tul. L. Rev. 2323, 2331 n.27, 2337 (2008)). While parties may
occasionally consent to be bound by the results of a single
bellwether, see, e.g., Silivanch v. Celebrity Cruises, Inc., 333 F.3d
355, 359 (2d Cir. 2003), the plaintiﬀs’ descriptions of the Wave
2 trials conﬁrm that no such thing happened here. The plain-
tiﬀs repeatedly described the Wave 2 trials as informing future
litigation—not foreclosing future claims. For example, the
plaintiﬀs’ motion for a case management order insisted that
“[o]nce these bellwether trials [were] complete, all parties
34                                            Nos. 22-2636 et al.

would have a good handle on how to resolve any remaining
issues, and be able to formulate a game plan for the remainder
of the cases.” Later on, the plaintiﬀs described the district
court’s ﬁndings in prior waves as merely “precedent” that
would help inform disputed issues, not bind the parties.
    Importantly, the vitality of the day-in-court ideal does not
diminish in consolidated, multi-party litigation. As the Third
Circuit observed in another mass tort case, consolidation
“does not merge the suits into a single cause, or change the
rights of the parties, or make those who are parties in one suit
parties in another.” In re TMI Litig., 193 F.3d 613, 724 (3d Cir.
1999). There, the court found issue preclusion improper
among consolidated cases, even where the parties had agreed
to conduct evidentiary and discovery matters on an “[a]ll
[p]laintiﬀs” basis, and even where the district court’s ruling
“turn[ed] on broad evidentiary issues common to all Plain-
tiﬀs.” Id. at 628, 723. Notwithstanding those coordinated pro-
ceedings and the common issues, the court found that apply-
ing issue preclusion would “improperly extend the doctrine”
beyond its due process bounds. Id. at 726.
    We think Wisconsin courts would share the hesitation to
ﬁnd privity and preclude a nonparty from litigating an appli-
cation of law to fact without some clear indication that the
nonparty intended that result. That reluctance is particularly
prudent in the complex and plaintiﬀ-rich environment of
mass-tort litigation, where the temptation to strike many
birds with one stone is understandably strong. Cf. Malcolm v.
Nat’l Gypsum Co., 995 F.2d 346, 350 (2d Cir. 1993) (“The sys-
temic urge to aggregate litigation must not be allowed to
trump our dedication to individual justice, and we must take
care that each individual plaintiﬀ’s—and defendant’s—cause
Nos. 22-2636 et al.                                             35

not be lost in the shadow of a towering mass litigation.” (quot-
ing In re Brooklyn Navy Yard Asbestos Litig., 971 F.2d 831, 853
(2d Cir. 1992)). Even among tightly coordinated cases, “sepa-
rate cases brought together for pretrial proceedings ‘retain
their separate identities.’” Home Depot USA, Inc. v. Lafarge N.
Am., Inc., 59 F.4th 55, 62 (3d Cir. 2023) (quoting Gelboim v. Bank
of Am. Corp., 574 U.S. 405, 413 (2015)). Consolidation alone
cannot “impose the heavy toll of a diminution of any party’s
rights.” Id. (quoting Bradgate Assocs., Inc. v. Fellows, Read & As-
socs., 999 F.2d 745, 750 (3d Cir. 1993)). We therefore ﬁnd insuf-
ﬁcient evidence that Group 4, in the CMO or elsewhere, con-
sented to be bound in the prior proceedings.
       2. Control
    The next category of exception to the general rule against
nonparty preclusion is control. “[A] nonparty is bound by a
judgment if she ‘assume[d] control’ over the litigation in
which that judgment was rendered.’” Taylor, 553 U.S. at 895
(quoting Montana, 440 U.S. at 154); see also State v. Mechtel, 499
N.W.2d 662, 667 (Wis. 1993) (“For a nonparty to an action to
be in privity with a party, the nonparty must substantially
control or be represented by the party.”). Where a nonparty’s
vicarious presence in a case amounts to an exercise of control
over a named party, “then the nonparty eﬀectively enjoyed
his day in court, and it is appropriate to impute to him the
legal attributes of party status for [preclusion] purposes.”
Gonzalez v. Banco Cent. Corp., 27 F.3d 751, 758 (1st Cir. 1994).
   “Control” in this context carries its ordinary meaning and
should not be confused with mere coordination or an align-
ment of interests. “[T]he degree of control justifying preclu-
sion of a nonparty should be enough that the nonparty has
the actual measure of control or opportunity to control that
36                                            Nos. 22-2636 et al.

might reasonably be expected between two formal coparties.”
Kerr-McGee Chem. Corp. v. Hartigan, 816 F.2d 1177, 1181 (7th
Cir. 1987) (cleaned up); see also Mechtel, 499 N.W.2d at 667
(ﬁnding no evidence that the state controlled a federal prose-
cution where “[t]he state and federal prosecutors did cooper-
ate to some degree when the state decided to dismiss the ﬁre-
arms charges in order to allow the ﬁrearms charges to be fed-
erally prosecuted”); Restatement (Second) of Judgments § 39
(1982) (“To have control of litigation requires that a person
have eﬀective choice as to the legal theories and proofs to be
advanced in behalf of the party to the action. He must also
have control over the opportunity to obtain review.”). A mere
tightly coordinated litigation strategy between the parties is
insuﬃcient. See E.E.O.C. v. Pemco Aeroplex, Inc., 383 F.3d 1280,
1290 (11th Cir. 2004); 18A Wright & Miller, supra, at § 4451
(“[I]t is not enough that the nonparty … participated in con-
solidated pretrial proceedings”).
    We ﬁnd no evidence of control in this case. While the dis-
trict court found that “the plaintiﬀs were prosecuting claims
against the same defendants under identical legal theories in
front of the same court and the same judge, who had been
managing all cases jointly,” its focus on those similarities says
nothing about the degree of Group 4’s control over the Wave
2 proceedings.
    The only possible evidence of control is the parties’ shared
counsel. It is well established, however, that shared counsel
alone does not amount to control and cannot alone justify pre-
clusion of a nonparty. See, e.g., Clarke, 998 N.W.2d at 392 n.23
(“[T]he identity of the lawyers hired by [the nonparty] is irrel-
evant to whether the [nonparty’s] due process rights were
protected.” (citing Taylor, 553 U.S. at 892–93)); Gonzalez, 27
Nos. 22-2636 et al.                                             37

F.3d at 759 (“[C]ourts have refused to ﬁnd substantial control
merely because a nonparty retained the attorney who repre-
sented a party to the earlier action.”); Collins v. E.I. DuPont de
Nemours & Co., 34 F.3d 172, 178–79 (3d Cir. 1994) (“The fact
that the plaintiﬀ’s attorney took part in a prior, similar action
is irrelevant unless there is evidence that the plaintiﬀ was,
through his or her attorney, actually participating in the prior
suit.”); Benson & Ford, Inc. v. Wanda Petroleum Co., 833 F.2d
1172, 1175 (5th Cir. 1987) (“For a nonparty to be so closely
aligned … requires more than a showing of parallel interest
or, even, a use of the same attorney in both suits.”) (quotation
marks omitted). The Group 4 plaintiﬀs thus did not control
the earlier litigation for purposes of issue preclusion.
       3. Adequate Representation
    Under the ﬁnal Taylor category, “a nonparty may be bound
by a judgment because she was ‘adequately represented by
someone with the same interest who [was] a party’ to the
suit.” Taylor, 553 U.S. at 894 (quoting Richards, 517 U.S. at 798).
“A party’s representation of a nonparty is ‘adequate’ for pre-
clusion purposes only if, at a minimum: (1) The interests of
the nonparty and her representative are aligned; and (2) either
the party understood herself to be acting in a representative
capacity or the original court took care to protect the interests
of the nonparty.” Id. at 900 (ﬁrst citing Hansberry v. Lee, 311
U.S. 32, 43 (1940), and then citing Richards, 517 U.S. at 801–02).
Where the second prong goes unsatisﬁed, the due process in-
quiry “c[omes] to an end.” Id. at 897–98.
    In this case, there is no evidence satisfying either element
of the second prong. The Wave 2 plaintiﬀs “did not sue on
behalf of a class,” their complaint “did not purport to assert
any claim against or on behalf of any nonparties,” and the
38                                            Nos. 22-2636 et al.

court’s summary judgment ruling “did not purport to bind”
nonparties. Richards, 517 U.S. at 801. There is also no indica-
tion that the court “took care to protect the interests” of the
Group 4 plaintiﬀs, or that the Wave 2 plaintiﬀs “understood
their suit to be on behalf of absent [parties].” Id. at 802. Under
these circumstances, the prior plaintiﬀs did not adequately
represent the Group 4 plaintiﬀs, and issue preclusion would
be “inconsistent with ‘the due process of law guaranteed by
the Fourteenth Amendment.’” Taylor, 553 U.S. at 896–97 (quot-
ing Richards, 517 U.S. at 797).
                         *      *      *
    The application of issue preclusion against the Group 4
plaintiﬀs thus does not ﬁt within any of Taylor’s exceptions to
the general rule against nonparty issue preclusion. While that
conclusion is not determinative, it does aid us in locating the
due process limitations that shape Wisconsin’s preclusion
test. Indeed, we ﬁnd no Wisconsin authority since Taylor sug-
gesting that Wisconsin’s courts embrace a more expansive ap-
proach to issue preclusion than that of the federal common
law. There is therefore good reason to think that given the op-
portunity, the Wisconsin Supreme Court would take an
equally dim view of a brand of issue preclusion falling out-
side of Taylor’s recognized exceptions. Cf. id. at 904 (“The pre-
clusive eﬀects of a judgment in a federal-question case de-
cided by a federal court should … be determined according
to the established grounds for nonparty preclusion described
in this opinion.”); Duckett v. Fuller, 819 F.3d 740, 745 (4th Cir.
2016) (“[T]he resolution of the issue presented in this appeal
begins and ends with Taylor.”); Briscoe v. City of New Haven,
654 F.3d 200, 203–04 (2d Cir. 2011) (“consult[ing] the[] six cat-
egories” in Taylor and ﬁnding issue preclusion improper).
Nos. 22-2636 et al.                                           39

    Accordingly, we conclude that the Group 4 plaintiﬀs were
not in privity and lacked suﬃcient identity of interest with the
plaintiﬀs in the prior proceedings. Group 4 has thus far sat
largely on the sidelines of this litigation, a position that has
deprived them of the “full and fair opportunity to litigate” the
duty question. Taylor, 553 U.S. at 892; Paige, 594 N.W.2d at
377–78. “Principles of issue preclusion have not developed to
the point where we may bind plaintiﬀs by the ﬁnding of pre-
vious proceedings in which they were not parties”—even by
proceedings as coordinated as those that the case manage-
ment order called for here. See In re TMI, 193 F.3d at 726 (quot-
ing DeLuca v. Merrell Dow Pharm., Inc., 911 F.2d 941, 952 (3d
Cir. 1990)). Because the Group 4 plaintiﬀs were not in privity
nor had suﬃcient identity of interest with the prior plaintiﬀs,
“applying issue preclusion to the[m] would violate [their]
due process rights and the analysis ends.” Paige, 594 N.W.2d
at 377.
    Undeterred, the defendants insist that Group 4 was on no-
tice that issue preclusion would apply to their cases because
the court used issue preclusion to dismiss American Cyana-
mid after ﬁnding that it lacked personal jurisdiction in the
Wave 1 trials. The defendants oﬀer no case in which a court
has recognized a notice-based theory of issue preclusion. And
even assuming mere notice could cure our due process con-
cerns, it would not do so here because no such notice existed.
While the court may have used issue preclusion to dismiss
American Cyanamid, it declined to apply issue preclusion to
the jury’s liability ﬁnding as to Atlantic Richﬁeld, explaining
that the appropriateness of preclusion depended on the cir-
cumstances. Indeed, Sherwin Williams itself opposed Atlantic
Richﬁeld’s attempt to apply issue preclusion, asserting that
“Plaintiﬀs may wish to investigate and present their own …
40                                                     Nos. 22-2636 et al.

evidence … that was not presented or developed fully in the
ﬁrst-round trial.” The court’s earlier rulings thus did not pro-
vide the plaintiﬀs with meaningful notice and cannot support
its application of issue preclusion here. 11
    Finally, although we disagree with the district court’s ap-
plication of issue preclusion under the circumstances here, we
recognize the inherent challenges that complex multiparty
cases pose for district courts. Courts in these circumstances
face the diﬃcult task of balancing litigants’ due process rights
against the practical demands of shepherding hundreds of in-
dividual claims toward ﬁnal resolution. Laudably, judges
“have risen to this challenge by devising eﬃcient, eﬀective,
and fair case management techniques.” Home Depot, 59 F.4th
at 65. This case is no diﬀerent, and we again commend the
court’s able stewardship of this litigation.
    But it is important that the eﬃcient pursuit of ﬁnality not
lose sight of the day-in-court guarantee and the due process
protections available to all parties. See Malcolm, 995 F.2d at 350
(“The beneﬁts of eﬃciency can never be purchased at the cost
of fairness.”). To that end, courts and commentators have
identiﬁed several tools at a district court’s disposal that pro-
mote the eﬃcient and ﬁnal resolution of complex cases, yet
safeguard litigants’ procedural interests in being heard. See,
e.g., Home Depot, 59 F.4th at 65–68. These include, for example,

     11 The defendants alternatively argue that law of the case separately

warrants judgment in their favor. Not so. As we have already explained,
law of the case operates “within a single action.” Currier v. Virginia, 138 S.
Ct. 2144, 2154 (2018). But see Disimone v. Browner, 121 F.3d 1262, 1266–67
(9th Cir. 1997). Even if it did not, the due process concerns we have already
identiﬁed persuade us against applying that discretionary doctrine here.
Nos. 22-2636 et al.                                              41

treating prior decisions as persuasive absent a showing of
cause why the issue should be revisited, or requiring consoli-
dated complaints. Id. Nothing in this opinion should be taken
to discourage such devices, or other procedural innovation
consistent with due process, going forward.
       4. The Plaintiﬀs’ New Evidence
    The defendants also ask us to consider the merits of the
duty-to-warn question based on the new lead dust evidence.
“[F]actﬁnding is the basic responsibility of district courts, ra-
ther than appellate courts.” Pullman-Standard v. Swint, 456
U.S. 273, 291–92 (1982) (quoting DeMarco v. United States, 415
U.S. 449, 450 (1974)). It is not our role to leapfrog the district
court and “resolve[] in the ﬁrst instance [a] factual dispute
which ha[s] not been considered by the District Court.” Id.;
Door Sys., Inc. v. Pro-Line Door Sys., Inc., 126 F.3d 1028, 1032
(7th Cir. 1997) (“It remains to apply the standard to the facts,
but that is a job in the ﬁrst instance for the district court.”). We
leave this task to the district court on remand.
D. Revisiting Burton II
    The plaintiﬀs close with a parting shot at Burton II. Specif-
ically, they take aim at two of our conclusions of state law
there: ﬁrst, that the duty to warn in both the negligence and
strict liability contexts depends on the knowledge of the ulti-
mate consumer; and second, that there can be no negligence
liability without a product defect. See Burton II, 994 F.3d at
817–23. The plaintiﬀs assert that each of these conclusions was
contrary to Wisconsin law, and they move to certify the issues
to the Wisconsin Supreme Court for resolution. In the
42                                                       Nos. 22-2636 et al.

alternative, the plaintiﬀs ask us to overrule Burton II. 12 We re-
ject both invitations.
    Precedents may not be “sacrosanct,” but neither are they
ﬁckle. Buchmeier v. United States, 581 F.3d 561, 565 (7th Cir.
2009) (en banc). “There must be a serious justiﬁcation for over-
ruling a settled precedent.” United States v. Ramirez, 52 F.4th
705, 712 (7th Cir. 2022). “We do not lightly overturn circuit
precedent, and we give ‘considerable weight to prior deci-
sions of this court unless and until they have been overruled
or undermined by the decisions of a higher court, or other su-
pervening developments.’” Wesbrook v. Ulrich, 840 F.3d 388,
399 (7th Cir. 2016) (quoting Santos v. United States, 461 F.3d
886, 891 (7th Cir. 2006), aﬀ’d, 553 U.S. 507 (2008)).
     The inertia of circuit precedent is particularly strong when
the prior decision answered a question of state law. As we
said in Burton II, when the court invests the time and re-
sources to weigh in on an unsettled issue of state law, “our
conclusion binds us until the state’s supreme court says oth-
erwise.” Burton II, 994 F.3d at 815–16 (citing Reiser v. Residen-
tial Funding Corp., 380 F.3d 1027, 1029–30 (7th Cir. 2004)); see

     12 The plaintiﬀs also “suggest[ed],” but never petitioned for, an initial

en banc hearing to address our ruling in Burton II. See Fed. R. App. P. 35.
Wisely so, in our view. It bears repeating that the standards for granting
rehearings en banc (and initial en banc hearings, for that matter) are
“strict” in this circuit. HM Holdings, Inc. v. Rankin, 72 F.3d 562, 562 (7th Cir.
1995). The bar is even higher for petitions presenting only issues of state
law. Such petitions have “an added burden to explain why [a state law
issue is] of such exceptional importance that it warrant[s] review en banc
in a federal court, the decision of which would not even be binding on
[state] courts.” Id. at 563. The plaintiﬀs here make no case why the issues
in Burton II rise to that level.
Nos. 22-2636 et al.                                            43

also Wesbrook, 840 F.3d at 399 (“The state courts are quite ca-
pable of signaling when they disagree with a federal court’s
interpretation of state law.”). The Wisconsin courts have not
said otherwise in this instance. The plaintiﬀs point to no state
court case since Burton II disapproving or even distinguishing
our decision there. Not for lack of opportunity, either—a year
after our decision in Burton II, the plaintiﬀs asked the Wiscon-
sin Supreme Court to take jurisdiction of an original action
addressing these same questions, and the state court declined
review. See Wis. Stat. § 809.70 (2021). Moreover, the cases we
relied on in Burton II remain good law. See, e.g., Godoy ex rel
Gramling v. E.I. du Pont de Nemours & Co., 768 N.W.2d 674
(Wis. 2009); Morden v. Cont’l AG, 611 N.W. 2d 659 (Wis. 2000);
Greiten v. LaDow, 235 N.W.2d 677 (Wis. 1975) (controlling
opinion of Heﬀernan, J.). The plaintiﬀs’ challenges to Burton
II on this appeal are identical to those we rejected in Burton II,
and nothing since then has called that decision into question.
Absent any indication that the Wisconsin state courts take is-
sue with Burton II, “the principle of stare decisis controls.”
Wesbrook, 840 F.3d at 399.
   Certiﬁcation to the Wisconsin Supreme Court is also inap-
propriate. For starters, we are far from “uncertain” about
what Wisconsin law has to say about these questions because
we answered them at length in Burton II. See State Farm Mut.
Auto. Ins. Co. v. Pate, 275 F.3d 666, 673 (7th Cir. 2001). As a
prudential matter, sending to the state court questions we
have already answered renders our earlier eﬀort a waste—es-
pecially without signs from the state court that we got Burton
44                                                     Nos. 22-2636 et al.

II wrong. 13 See Nat’l Cycle, Inc. v. Savoy Reinsurance Co., 938
F.2d 61, 64 (7th Cir. 1991) (“[T]he right time to certify a ques-
tion is before the ﬁrst federal decision on the point. Certiﬁca-
tion eliminates the need to expend judicial resources predict-
ing how another court will decide a question. Once we have
invested the time and eﬀort to make the prediction, the costs
have been sunk.”); see also Hernandez v. Ill. Inst. of Tech., 63
F.4th 661, 673 (7th Cir. 2023) (Kirsch, J., concurring). Finally,
the Wisconsin Supreme Court already declined to address the
issues in Burton II when it denied the plaintiﬀs’ petition for
original action. See Circle Block Partners, LLC v. Fireman’s Fund
Ins. Co., 44 F.4th 1014, 1024 (7th Cir. 2022) (declining to certify
questions in part because “[t]he Indiana Supreme Court re-
cently decided not to address those issues” (citations omit-
ted)). We therefore decline to certify the issue to the Wisconsin
Supreme Court. 14
                             III. Conclusion
    For these reasons, we aﬃrm the judgments of the district
court as to the Wave 2 and Group 3 plaintiﬀs. We reverse the
judgment as to Group 4, and remand to the district court for
further proceedings consistent with our opinion.

     13 Indeed, we declined a motion to certify nearly identical questions

after Burton II.
     14 In light of this decision, the defendants’ motion to strike the plain-

tiﬀs’ certiﬁcation motion is denied as moot.