Zimmer Biomet Holdings , Inc . v. Mary N. Insall, as Executrix of the Estate of John N. Insall

In the
United States Court of Appeals
For the Seventh Circuit
____________________
No. 23-1888
Z IMMER BIOMET HOLDINGS , I NC .,
Plaintiff-Appellant,
v.
M ARY N. I NSALL, as Executrix of the Estate of John N. Insall,
Defendant-Appellee.
____________________
Appeal from the United States District Court for the
Northern District of Illinois, Eastern Division.
No. 1:22-cv-02575 — Lindsay C. Jenkins, Judge.
____________________
A RGUED J ANUARY 19, 2024 — DECIDED J ULY 12, 2024
____________________
Before S T. EVE, LEE, and PRYOR , Circuit Judges.
LEE, Circuit Judge. Dr. John Insall, an orthopedic surgeon
who specialized in knee reconstruction and replacement, de-
veloped and obtained a number of valuable foreign and do-
mestic patents involving knee replacement devices and ac-
coutrements that he licensed to Zimmer Biomet Holdings, Inc.
In exchange, Zimmer agreed to pay substantial royalties to In-
sall (which, upon his death, Zimmer paid to his Estate). After
Insall’s last patent expired in 2018, Zimmer stopped all

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2 No. 23-1888
royalty payments, asserting that its obligation under the roy-
alty agreement had expired. The parties submitted the dis-
pute to arbitration as required by the agreement, and the Es-
tate prevailed. Zimmer then asked the district court to vacate
the arbitration award, arguing that enforcement of the con-
tract would violate public policy. The district court rejected
this argument and confirmed the award. We agree and affirm.
I. Factual Background
As a medical device company, Zimmer manufactures a va-
riety of products, including technology used for knee replace-
ments. Zimmer joined forces with Insall in 1991 to develop
certain knee replacement devices and related appurtenances
ultimately sold under the brand name “NexGen.” Under this
plan, Insall would develop and secure patents for these de-
vices, and Zimmer would pay royalties to Insall for the right
to license, market, and sell them. This arrangement was me-
morialized in a written agreement in 1991. It required Zimmer
to make royalty payments to Insall until “the expiration of the
last to expire of the patents licensed hereunder or so long as
Product is sold by ZIMMER, whichever is last to occur.”
The parties amended the agreement in 1994. Among other
things, Insall promised to work exclusively for Zimmer
through January 1, 2011. The parties also agreed to expand the
scope of the agreement from the particular knee replacement
system identified in the 1991 agreement to “the design and
development of all components of any future knee system
that is developed in whole or in part in the United States and
offered as a standard line product for Zimmer.” As for the
royalty payments, they were to encompass Insall’s work on
“future knee systems” until “the expiration of the last to ex-
pire of the Patents licensed hereunder or on January 1, 2011,

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No. 23-1888 3
whichever is last to occur.” The parties also added an arbitra-
tion provision that required all disputes arising out of or re-
lated to the agreement to be submitted for binding arbitration.
Portions of the agreement were amended again in 1998.
Relevant here, the amended agreement provided:
The parties acknowledge that … royalties shall
be paid at the rate of 1% of Net Sales Price on all
sales of the NexGen Knee and all subsequently
developed articles, devices or components mar-
keted by Zimmer as part of the NexGen Knee
family of knee components and not at the rate
provided for sales of “future knee systems.”
In a previous arbitration between the parties (referred to as
the Persona Arbitration, named after the technology at issue
in that dispute), Zimmer’s counsel explained that the 1998
amendments changed the method by which royalties were to
be calculated. Rather than being based on the sale of products
containing the patented technology, the royalties under the
1998 agreement were based on the sale of items that Zimmer
marketed under its “NexGen Knee” family of products. The
arbitration provision remained unchanged.
Insall’s last patent expired on March 10, 2018, and Zim-
mer’s chief patent counsel informed the Estate a few months
later that the company would no longer pay royalties to the
Estate. By way of explanation, Zimmer asserted that under
the Supreme Court decisions Brulotte v. Thys Co., 379 U.S. 29
(1964), and Kimble v. Marvel Entertainment, LLC, 576 U.S. 446
(2015), a licensor may not collect royalties based on an expired
patent. In its view, the payment of ongoing royalties under

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4 No. 23-1888
the amended agreement ran “counter to the policy and pur-
pose of patent laws.”
Unsurprisingly, the Estate disagreed, and the parties sub-
mitted the dispute for arbitration in late 2019. In a detailed
decision, the arbitration panel concluded that Brulotte did not
render the royalty provision in the 1998 agreement void and
unenforceable. As such, the panel found that Zimmer had
breached its obligations to pay royalties to the Estate, ordered
Zimmer to pay past-due royalties, and affirmed Zimmer’s ob-
ligation to pay royalties to the Estate in accordance with the
1998 agreement.
Zimmer then initiated this lawsuit and asked the district
court to vacate the award. The Estate responded with a mo-
tion to dismiss and moved the district court to confirm the ar-
bitration award. The district court agreed with the Estate and
confirmed the arbitration award. This appeal followed.
II. Scope of Review
A. Standard of Review
We review a district court’s decision on a motion to vacate
or confirm an arbitration award under the Federal Arbitration
Act (FAA) de novo. Webster v. A.T. Kearney, Inc., 507 F.3d 568,
571 (7th Cir. 2007). Factual findings are reviewed for clear er-
ror. Kinsella v. Baker Hughes Oilfield Operations, LLC, 66 F.4th
1099, 1103 (7th Cir. 2023).
We begin by emphasizing that the FAA and Supreme
Court precedent establish that “arbitration awards are largely
immune from … scrutiny in court.” Nano Gas Techs., Inc. v.
Roe, 31 F.4th 1028, 1031 (7th Cir. 2022) (cleaned up). The
breadth of our review is “extremely limited.” Chrysler Motors
Corp. v. Int’l Union, Allied Indus. Workers of Am., AFL-CIO, 959

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No. 23-1888 5
F.2d 685, 687 (7th Cir. 1992). We may not reconsider the merits
of an award even when a party argues that the arbitrators
made a factual error or even a legal one when interpreting a
contract. United Paperworkers Int’l Union, AFL-CIO v. Misco,
Inc., 484 U.S. 29, 36 (1987).
There is, however, a narrow exception to our tightly pro-
scribed review. As discussed more below, “[t]he public policy
doctrine allows this court to decide de novo whether [the
award at issue] violates public policy.” Chrysler Motors, 959
F.2d at 687 (cleaned up).
B. The Federal Arbitration Act
Arbitration aims to resolve disputes more efficiently and
at a lower cost than traditional litigation. See Sarah Rudolph
Cole, Curbing the Runaway Arbitrator in Commercial Arbitration:
Making Exceeding the Powers Count, 68 Ala. L. Rev. 179, 184
(2016). In exchange for expediency and finality, however, par-
ties trade the right to challenge the substance of the decision-
maker’s ruling; as a result, judicial review of arbitral awards
is extremely limited and highly deferential. See Affymax, Inc.
v. Ortho-McNeil-Janssen Pharms., Inc., 660 F.3d 281, 285 (7th
Cir. 2011) (citing Major League Baseball Players Ass’n v. Garvey,
532 U.S. 504 (2001)).
The FAA authorizes a court to vacate an award for only
four reasons:
(1) where the award was procured by corrup-
tion, fraud, or undue means;
(2) where there was evident partiality or corrup-
tion in the arbitrators, or either of them;

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6 No. 23-1888
(3) where the arbitrators were guilty of miscon-
duct in refusing to postpone the hearing, upon
sufficient cause shown, or in refusing to hear ev-
idence pertinent and material to the contro-
versy; or of any other misbehavior by which the
rights of any party have been prejudiced; or
(4) where the arbitrators exceeded their powers,
or so imperfectly executed them that a mutual,
final, and definite award upon the subject mat-
ter submitted was not made.
9 U.S.C. § 10(a).
Congress statutorily constrained the grounds for vacatur
to these reasons, and courts may not expand them. Hall Street
Associates, L.L.C. v. Mattel, Inc., 552 U.S. 576, 584–89 (2008)
(noting also that limited judicial review of arbitration awards
is “needed to maintain arbitration’s essential virtue of resolv-
ing disputes straightaway”). Furthermore, Section 10(a) has
been understood to reflect a congressional focus on proce-
dural protections rather than ensuring the correct outcome.
See Dean Witter Reynolds, Inc. v. Byrd, 470 U.S. 213, 219 (1985)
(“The legislative history of the Act establishes that the pur-
pose behind its passage was to ensure judicial enforcement of
privately made agreements to arbitrate.”); see Hill v. Norfolk &
Western Ry., 814 F.2d 1192, 1194–95 (7th Cir. 1987) (the ques-
tion before us “is not whether the arbitrator or arbitrators
erred in interpreting the contract; it is not whether they clearly
erred in interpreting the contract; it is not whether they
grossly erred in interpreting the contract; it is whether they
interpreted the contract”).

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No. 23-1888 7
C. Public Policy Exception
That said, the power of federal courts to enforce contracts
is at all times “subject to the restrictions and limitations of the
public policy of the United States as manifested in the Consti-
tution, treaties, federal statutes, and applicable legal prece-
dents.” Hurd v. Hodge, 334 U.S. 24, 35 (1948). And where en-
forcement of private agreements would violate public policy,
“it is the obligation of courts to refrain from such exertions of
judicial power.” Id. The Supreme Court has explicitly applied
this principle to agreements to arbitrate. In doing so, the
Court has been clear that if a contract—as interpreted by the
arbitrators—and the accompanying remedy or relief violate
some explicit public policy, “we are obliged to refrain from
enforcing” the arbitration award. W.R. Grace & Co. v. Loc. Un-
ion 759, Int’l Union of United Rubber, Cork, Linoleum & Plastic
Workers of Am., 461 U.S. 757, 766 (1983). Not any policy will
do, however. To trigger this exception, a policy “must be well
defined and dominant, and is to be ascertained by reference
to the laws and legal precedents and not from general consid-
erations of supposed public interests.” Chrysler Motors, 959
F.2d at 687 (cleaned up).
Despite our limited authority to review arbitration
awards, then, “[t]he question of public policy is ultimately
one for resolution by the courts.” W.R. Grace, 461 U.S. at 766.
Here, Zimmer invokes this exception, arguing that the arbi-
tration panel’s interpretation of the agreement and resulting
award of royalties must be voided as a matter of public policy.
Before proceeding, however, we need to address the Es-
tate’s threshold contention that the public policy exception to
the enforcement of arbitration awards is limited to disputes
involving collective bargaining agreements. While this issue

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8 No. 23-1888
certainly arises regularly in those types of cases, we have
never cabined the doctrine to the arbitration of labor disputes.
Indeed, we have considered the public policy exception to the
enforcement of arbitration awards in other contexts. See, e.g.,
In re Harshaw, 26 F.4th 768, 775 (7th Cir. 2022). And this makes
sense given that the doctrine “derives from the basic notion
that no court will lend its aid to one who founds a cause of
action upon an immoral or illegal act.” United Paperworkers
Int’l Union, 484 U.S. at 42; see also W.R. Grace, 461 U.S. at 766
(“As with any contract, however, a court may not enforce a col-
lective bargaining agreement that is contrary to public pol-
icy.”) (emphasis added). Thus, neither precedent nor the FAA
supports the Estate’s view that the public policy exception can
apply only to arbitration awards in labor disputes. With that,
we proceed to the main topic at hand.
III. Analysis
A. The Arbitration Award
On appeal, Zimmer urges us to vacate the arbitration
award because it violates the public policy the Supreme Court
laid out in Brulotte and Kimble. In evaluating whether an arbi-
tration award violates public policy, we are bound by the ar-
bitrators’ interpretation of the contract. W.R. Grace, 461 U.S. at
766. As such, we examine the interpretive questions put to the
arbitration panel and the panel’s conclusions. We then ask
whether the contract—as interpreted by the arbitration
panel—and the arbitration award violate public policy. But
first we examine Brulotte and Kimble.
In Brulotte, the plaintiff owned several patents for certain
hop-picking machines. 379 U.S. 29, 29–30 (1964). He manufac-
tured the machines and sold them to farmers, along with

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No. 23-1888 9
licenses to use them. In return, the farmers agreed to pay the
plaintiff royalties from the crops they harvested during the
life of the license agreements. The patents, however, expired
before the end date of the agreements, and the farmers re-
fused to make any royalty payments on the grounds that the
plaintiff had misused the patents by requiring royalties after
their expiration. In the end, the Supreme Court agreed, hold-
ing that the license agreements were unenforceable and “un-
lawful per se” to the extent they provided for the payment of
royalties “accru[ing] after the last of the patents incorporated
into the machines had expired.” Id. at 30, 32.
Over the years, the reasoning in Brulotte has faced much
criticism from courts and academics alike. See Scheiber v. Dolby
Lab’ys, Inc., 293 F.3d 1014, 1017–18 (7th Cir. 2002) (reviewing
the cases and academic writings critical of Brulotte). And we
took part in the growing chorus. Id. at 1017 (noting that
Brulotte has been “severely, and as it seems to us, with all due
respect, justly, criticized”). This was the landscape the Su-
preme Court encountered when it contemplated overruling
Brulotte in Kimble.
In that case, the inventor Kimble had obtained a patent on
a toy that children used to shoot web-like foam string to role-
play as “a spider-person” (this is the word the patent used).
Not surprisingly, Marvel Entertainment, LLC (the publisher
of the Spider-Man graphic novels and owner of the mark) was
none too happy. It sued Kimble, and the parties eventually
entered into a settlement agreement. In it, Marvel agreed to
purchase the patent from Kimble in exchange for a lump sum
and a three percent royalty on future sales of the toy, with no
termination date.

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10 No. 23-1888
As the patent’s expiration approached, Marvel sought a
declaratory judgment that it could stop making the royalty
payments to Kimble once the patent became inviable, relying
on Brulotte. In response, citing the criticism of Brulotte, Kimble
asked that Brulotte be overruled. The Supreme Court, how-
ever, did not find Kimble’s criticism of Brulotte on economic
efficiency grounds particularly persuasive, noting that con-
tracting parties “can often find ways around Brulotte to
achieve those same ends.” Kimble, 576 U.S. at 453. On the other
hand, the Court stated, the important aims of stare decisis
counseled upholding Brulotte, and to the extent that Kimble
disagreed with its holding as a matter of policy, he was better
off addressing his complaints to Congress.
Significantly, however, the Supreme Court took the op-
portunity to clarify Brulotte’s scope. First, it observed that “all
the decision [i.e., Brulotte] bars are royalties for using an in-
vention after it has moved into the public domain.” Id. at 453–
54. Second, it explained that, even under Brulotte, “post-expi-
ration royalties are allowable so long as tied to a non-patent
right—even when closely related to a patent.” Id. at 454.
What does this mean for our case? In the arbitration, Zim-
mer argued that it need not pay any royalties to Insall’s Estate
because the basis for the royalties—the patents—had expired.
But this argument presupposes that the royalties were, in fact,
based on the rights the patents bestowed and not some “non-
patent right” that is “closely related to” the patents. Thus, the
main question the arbitration panel had to decide is whether
the royalties Zimmer promised in the agreement and its
amendments were based on the patents themselves or a
closely related non-patent right.

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No. 23-1888 11
Tackling this head-on, the arbitrators examined and inter-
preted each iteration of the contract. The panel first agreed
with Zimmer that Brulotte applied to the royalty provision in
the 1991 agreement. But the panel went on to find that the
1998 amendments created a different royalty regime:
What the parties contemplated in 1991 and Dr.
Insall’s imputed leverage were superseded by
events and a new basis for determining royalties
in 1998, as Zimmer strenuously and success-
fully maintained in the Persona Arbitration. Ar-
ticle IV’s Royalties provision from 1991 was not
deleted (cf., 1998 Secs. 3 and 11). Under 1998
Sec. 3, however, it became vestigial, replaced by
a new royalty provision untied and no longer de-
pendent on Insall’s patents, products, or technology.
The 1998 Agreement text separates Insall’s roy-
alty rights from anything based on patents or
technology. Zimmer obtained the new royalty
provision it sought superseding the 1991 “hy-
brid” license. Nothing remained that mixed pa-
tent/non-patent royalties.
(emphasis provided).
Along the way, it relied on statements by Zimmer’s own
witnesses in the Persona Arbitration as well as Zimmer’s
counsel, who stated in his closing argument that the 1998
amendment “changed the structure, changed the royalty pay-
ment determination from one based on products having In-
sall’s technology in them as it was in ’91 and ’94 to a[n] [sic] is
it marketed based as [sic] NexGen determination.” The roy-
alty in the 1998 amendments, counsel continued, became “a
marketing and branding based determination” and gave

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12 No. 23-1888
Insall “royalty on components he doesn’t have any technol-
ogy in or any involvement in.”
On appeal, Zimmer disagrees with the arbitration panel’s
conclusions and argues that, although the parties changed
how the royalties were calculated, they never changed why
they were paid in the first place. But we are not here to judge
whether the panel’s determination was correct. As we have
recently emphasized, “[a]n arbitration clause delegates inter-
pretive power to the arbitrators. We do not ask whether they
read the contractual language correctly; it is enough that they
tried to apply the contract that the parties signed.” Am. Zurich
Ins. Co. v. Sun Holdings, Inc., 103 F.4th 475, 477 (7th Cir. 2024).
Here, whether the 1998 amendment untethered the royalties
from the patents was a question of interpretation reserved for
the arbitrators. See United Steelworkers of Am. v. Enter. Wheel &
Car Corp., 363 U.S. 593, 599 (1960). And, after examining the
agreement and its amendments, the arbitration panel’s con-
clusion was clear—the 1998 amendments controlled, and the
royalty terms were no longer premised on the patents or the
technology they covered.
Our only remaining task, then, is to decide whether the
royalty provision in the 1998 agreement, as the arbitration
panel construed it, violates a well-defined and dominant pub-
lic policy.
B. Well-Defined and Dominant Public Policy
Despite the deference arbitral decisions demand, we nev-
ertheless must vacate an arbitration award if the remedy or
relief violates an explicit, well-defined, and dominant public
policy. W.R. Grace, 461 U.S. at 766. Whether a policy meets
those criteria must be decided based on “laws and legal

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No. 23-1888 13
precedents and not from general considerations of supposed
public interests.” Muschany v. United States, 324 U.S. 49, 66
(1945). An arbitral award most clearly violates public policy
when it creates an explicit conflict with statutory laws or well-
established and easily discernible precedent. Titan Tire Corp.
of Freeport v. United Steel, Paper & Forestry, Rubber, Mfg., En-
ergy, Allied Indus. & Serv. Workers Int’l Union, 734 F.3d 708, 716
(7th Cir. 2013) (“A violation of a statute or some other positive
law is the clearest example of a violation of public policy and
no arbitrator is entitled to direct a violation of positive law.”)
(cleaned up).
Zimmer contends that Brulotte and Kimble established a
dominant and well-defined public policy that a party may not
be compensated for patent rights after the patent’s expiration.
But we need not decide this question, because the arbitration
award here must be confirmed even if Zimmer’s assessment
is correct.
Assuming, for argument’s sake, that Brulotte and Kimble
announced a clear public policy that royalties tied to patent
rights are unenforceable after the patent’s expiration, Zimmer
has no path to victory. After interpreting the parties’ license
agreement and its amendments, the panel determined that
the royalty payments in question were not grounded in any
patent rights and, thus, did not offend Brulotte and Kimble. We
have no power to unwind that holding here.
IV. Conclusion
For these reasons, we AFFIRM the district court and con-
firm the arbitration award in favor of Insall’s Estate.

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