COURT OF APPEALS EIGHTH DISTRICT OF TEXAS EL PASO, TEXAS
HELENA CHEMICAL COMPANY, § No. 08-25-00003-CV Appellant, § v. Appeal from the § 112th District Court PHILLIP BALES, DEREK DIERINGER, § WILBERT DIERINGER, MICHAEL of Reagan County, Texas HOCH, CMH FARMS, INC. MH FARMS § SERVICES, INC., WHIT BRADEN, (TC# 1923) DONALD BRADEN, and STREICHER § FARMS, INC., § Appellees. §
MEMORANDUM OPINION In the underlying lawsuit, Appellees, who are residents, farmers, and landowners, filed suit against
Helena Chemical Company (and other defendants who are not parties here), based on toxic tort,
negligence, and other causes of action. Appellees generally assert that Helena Chemical’s aerial
application of an herbicide negligently spread onto their cotton fields and other property proximately
causing damage to their cotton crops and crop yields. Before the Court is Helena Chemical’s petition for
permissive appeal. Helena Chemical seeks permission to appeal the trial court’s interlocutory order
denying its no-evidence motion for summary judgment, which the trial court certified for appeal. For the
reasons that follow, we deny the petition. Generally, appeals may be taken only from final judgments unless a statute authorizes an
interlocutory appeal. See Lehmann v. Har–Con Corp., 39 S.W.3d 191, 195 (Tex. 2001); see also Tex. Civ.
Prac. & Rem Code Ann. § 51.014 (listing permissible interlocutory appeals). Among the types of orders
permitting an interlocutory appeal, a broad exception authorizes a permissive appeal from an order “not
otherwise appealable[.]” Tex. Civ. Prac. & Rem. Code Ann. § 51.014(d). On a party’s motion or on its
own initiative, a trial court in a civil action may permit an appeal if:
(1) the order to be appealed involves a controlling question of law as to which there is a substantial ground for difference of opinion; and
(2) an immediate appeal from the order may materially advance the ultimate termination of the litigation.
Tex. Civ. Prac. & Rem. Code Ann. § 51.014(d); Sabre Travel Int'l, Ltd. v. Deutsche Lufthansa AG, 567
S.W.3d 725, 730 (Tex. 2019). A trial court’s grant of permission to appeal must be stated in a written
order. See Tex. R. Civ. P. 168.
When the trial court permits such appeal, the party seeking to appeal must then file a petition in
the court of appeals. See Tex. R. App. P. 28.3(a). To be entitled to a permissive appeal, the requesting
party must establish, among other requirements, that the interlocutory order sought to be appealed involves
a “controlling question of law as to which there is a substantial ground for difference of opinion[.]” See
Tex. R. App. P. 28.3(e)(4). Permission for interlocutory appeal is thus obtained at both levels, from the
trial court and the court of appeals.
Appellate courts strictly construe requests of this type because statutes allowing for interlocutory
appeal are exceptions to the general rule providing that only final judgments are appealable. Sabre Travel,
567 S.W.3d at 736 (“A departure from the final judgment rule in the form of an interlocutory appeal must
be strictly construed because it is ‘a narrow exception to the general rule that interlocutory orders are not
immediately appealable.’”); see also In re McAllen Med. Ctr., Inc., 275 S.W.3d 458, 461 (Tex. 2008)
2 (“Appellate courts cannot afford to grant interlocutory review of every claim that a trial court has made a
pre-trial mistake.”). Even when requirements are met, the appellate court must still agree to hear the
appeal. Tex. Civ. Prac. & Rem. Code Ann. § 51.014(f); Indus. Specialists, LLC v. Blanchard Ref. Co., 652
S.W.3d 11, 16 (Tex. 2022) (providing that even if the two requirements are satisfied, “the statute then
grants courts vast—indeed, unfettered—discretion to accept or permit the appeal.”). If a court of appeals
does not accept an appeal, it must state the specific reason for finding that the appeal is not warranted
under the statute. Tex. Civ. Prac. & Rem. Code Ann. § 51.014(g).
Here, in its order granting permission to appeal, the trial court identified the following controlling
question of law as to which there is a substantial ground for difference of opinion: “does the Texas
Supreme Court’s holding in Helena Chemical Company v. Cox, 664 S.W.3d 66 (Tex. 2023), dictate that
[Appellees’] expert scientific testimony is unreliable as a matter of law and amounts to no evidence of
causation?” In seeking permissive appeal, Helena Chemical claims that Cox is a companion case to the
suit at hand. It urges this suit was filed at the same time as Cox, and Appellees raise identical claims as
brought in Cox. Even more specifically, it maintains that Appellees offer the same experts, same
deposition testimony, and nearly identical lay testimony as in Cox. It asserts that evidence that was held
by the Supreme Court to be “no evidence of causation” in Cox is still “no evidence” when offered in
support of the same challenged element brought merely in another county. In short, Helena Chemical
contends that Cox provides controlling precedent in its favor, and such authority obligated the trial court
to rule in its favor on its motion for summary judgment.
In response, Appellees oppose Helena Chemical’s petition for permissive appeal. They contend
the facts and circumstances of this suit involving crops in Reagan County are markedly different from the
facts examined in Mitchell County as was done in Cox. Rather, they contend that Cox merely examined
facts and circumstances relating to a different case in a different county. They maintain that the Supreme
3 Court in Cox neither altered long-standing Texas law relating to the admissibility of expert testimony in
toxic tort cases generally, nor did it modify the standards for evaluating evidence produced in response to
a no-evidence motion for summary judgment. Thus, Appellees urge that Helena Chemical has failed to
establish the statutory prerequires that could support an interlocutory permissive appeal.
In resolving this petition, we begin with a brief review of Cox. There, cotton-farmer plaintiffs
alleged that Helena Chemical’s negligent, aerial-spraying of herbicide had proximately caused damage to
acres of cotton fields, resulting in decreased revenue to the farmers based on reduced yields of cotton at
harvest. Id. at 69. After holding an extensive hearing, the trial court granted Helena Chemical’s motion to
strike expert testimony and rendered a final take-nothing summary judgment against the cotton-farmer
plaintiffs. Id. at 72. On direct appeal, the Eastland Court of Appeals reached a split outcome. Id. It largely
reversed the trial court’s judgment on negligence after reasoning that plaintiffs’ expert evidence was
reliable and therefore admissible to raise a genuine issue of fact related to the challenged element of
causation. Id. But as to plaintiffs’ claims for mental anguish damages and punitive damages, the court of
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COURT OF APPEALS EIGHTH DISTRICT OF TEXAS EL PASO, TEXAS
HELENA CHEMICAL COMPANY, § No. 08-25-00003-CV Appellant, § v. Appeal from the § 112th District Court PHILLIP BALES, DEREK DIERINGER, § WILBERT DIERINGER, MICHAEL of Reagan County, Texas HOCH, CMH FARMS, INC. MH FARMS § SERVICES, INC., WHIT BRADEN, (TC# 1923) DONALD BRADEN, and STREICHER § FARMS, INC., § Appellees. §
MEMORANDUM OPINION In the underlying lawsuit, Appellees, who are residents, farmers, and landowners, filed suit against
Helena Chemical Company (and other defendants who are not parties here), based on toxic tort,
negligence, and other causes of action. Appellees generally assert that Helena Chemical’s aerial
application of an herbicide negligently spread onto their cotton fields and other property proximately
causing damage to their cotton crops and crop yields. Before the Court is Helena Chemical’s petition for
permissive appeal. Helena Chemical seeks permission to appeal the trial court’s interlocutory order
denying its no-evidence motion for summary judgment, which the trial court certified for appeal. For the
reasons that follow, we deny the petition. Generally, appeals may be taken only from final judgments unless a statute authorizes an
interlocutory appeal. See Lehmann v. Har–Con Corp., 39 S.W.3d 191, 195 (Tex. 2001); see also Tex. Civ.
Prac. & Rem Code Ann. § 51.014 (listing permissible interlocutory appeals). Among the types of orders
permitting an interlocutory appeal, a broad exception authorizes a permissive appeal from an order “not
otherwise appealable[.]” Tex. Civ. Prac. & Rem. Code Ann. § 51.014(d). On a party’s motion or on its
own initiative, a trial court in a civil action may permit an appeal if:
(1) the order to be appealed involves a controlling question of law as to which there is a substantial ground for difference of opinion; and
(2) an immediate appeal from the order may materially advance the ultimate termination of the litigation.
Tex. Civ. Prac. & Rem. Code Ann. § 51.014(d); Sabre Travel Int'l, Ltd. v. Deutsche Lufthansa AG, 567
S.W.3d 725, 730 (Tex. 2019). A trial court’s grant of permission to appeal must be stated in a written
order. See Tex. R. Civ. P. 168.
When the trial court permits such appeal, the party seeking to appeal must then file a petition in
the court of appeals. See Tex. R. App. P. 28.3(a). To be entitled to a permissive appeal, the requesting
party must establish, among other requirements, that the interlocutory order sought to be appealed involves
a “controlling question of law as to which there is a substantial ground for difference of opinion[.]” See
Tex. R. App. P. 28.3(e)(4). Permission for interlocutory appeal is thus obtained at both levels, from the
trial court and the court of appeals.
Appellate courts strictly construe requests of this type because statutes allowing for interlocutory
appeal are exceptions to the general rule providing that only final judgments are appealable. Sabre Travel,
567 S.W.3d at 736 (“A departure from the final judgment rule in the form of an interlocutory appeal must
be strictly construed because it is ‘a narrow exception to the general rule that interlocutory orders are not
immediately appealable.’”); see also In re McAllen Med. Ctr., Inc., 275 S.W.3d 458, 461 (Tex. 2008)
2 (“Appellate courts cannot afford to grant interlocutory review of every claim that a trial court has made a
pre-trial mistake.”). Even when requirements are met, the appellate court must still agree to hear the
appeal. Tex. Civ. Prac. & Rem. Code Ann. § 51.014(f); Indus. Specialists, LLC v. Blanchard Ref. Co., 652
S.W.3d 11, 16 (Tex. 2022) (providing that even if the two requirements are satisfied, “the statute then
grants courts vast—indeed, unfettered—discretion to accept or permit the appeal.”). If a court of appeals
does not accept an appeal, it must state the specific reason for finding that the appeal is not warranted
under the statute. Tex. Civ. Prac. & Rem. Code Ann. § 51.014(g).
Here, in its order granting permission to appeal, the trial court identified the following controlling
question of law as to which there is a substantial ground for difference of opinion: “does the Texas
Supreme Court’s holding in Helena Chemical Company v. Cox, 664 S.W.3d 66 (Tex. 2023), dictate that
[Appellees’] expert scientific testimony is unreliable as a matter of law and amounts to no evidence of
causation?” In seeking permissive appeal, Helena Chemical claims that Cox is a companion case to the
suit at hand. It urges this suit was filed at the same time as Cox, and Appellees raise identical claims as
brought in Cox. Even more specifically, it maintains that Appellees offer the same experts, same
deposition testimony, and nearly identical lay testimony as in Cox. It asserts that evidence that was held
by the Supreme Court to be “no evidence of causation” in Cox is still “no evidence” when offered in
support of the same challenged element brought merely in another county. In short, Helena Chemical
contends that Cox provides controlling precedent in its favor, and such authority obligated the trial court
to rule in its favor on its motion for summary judgment.
In response, Appellees oppose Helena Chemical’s petition for permissive appeal. They contend
the facts and circumstances of this suit involving crops in Reagan County are markedly different from the
facts examined in Mitchell County as was done in Cox. Rather, they contend that Cox merely examined
facts and circumstances relating to a different case in a different county. They maintain that the Supreme
3 Court in Cox neither altered long-standing Texas law relating to the admissibility of expert testimony in
toxic tort cases generally, nor did it modify the standards for evaluating evidence produced in response to
a no-evidence motion for summary judgment. Thus, Appellees urge that Helena Chemical has failed to
establish the statutory prerequires that could support an interlocutory permissive appeal.
In resolving this petition, we begin with a brief review of Cox. There, cotton-farmer plaintiffs
alleged that Helena Chemical’s negligent, aerial-spraying of herbicide had proximately caused damage to
acres of cotton fields, resulting in decreased revenue to the farmers based on reduced yields of cotton at
harvest. Id. at 69. After holding an extensive hearing, the trial court granted Helena Chemical’s motion to
strike expert testimony and rendered a final take-nothing summary judgment against the cotton-farmer
plaintiffs. Id. at 72. On direct appeal, the Eastland Court of Appeals reached a split outcome. Id. It largely
reversed the trial court’s judgment on negligence after reasoning that plaintiffs’ expert evidence was
reliable and therefore admissible to raise a genuine issue of fact related to the challenged element of
causation. Id. But as to plaintiffs’ claims for mental anguish damages and punitive damages, the court of
appeals affirmed the trial court’s take-nothing judgment. Id.
On discretionary review, the Texas Supreme Court affirmed in part and reversed in part, reinstating
the summary judgment in favor of Helena Chemical. Id. at 69. After identifying the central inquiry as
whether the plaintiffs’ experts offered reliable evidence of causation, the Supreme Court found plaintiffs’
expert testimony lacking. Id. at 82. Specifically, the Court identified “[plaintiffs’] witnesses offered no
reliable way to extrapolate from the small number of positive lab tests any conclusion at all about the
presence of clopyralid—much less Sendero—in the rest of the vast and scattered acreage for which
recovery is sought.” Id. at 77. Therefore, the Court concluded the evidence of causation offered by the
plaintiffs’ experts had failed to raise the genuine issue of material fact necessary to survive summary
judgment and rendered a take-nothing judgment on all claims in favor of Helena Chemical. Id. at 82.
4 Relevant to our jurisdictional inquiry, we agree with Appellees that Helena Chemical fails to
demonstrate how Cox’s applicability as controlling precedent amounts to “a controlling question of law
as to which there is a substantial ground for difference of opinion,” as required for interlocutory appeal.
See Tex. Civ. Prac. & Rem. Code Ann. § 51.014(d). As the statutory text has been interpreted by our sister
courts of appeal, and on which we agree, settled questions of law are not proper for a permissive appeal
because they are not subject to a substantial ground for difference of opinion. See Workers’ Comp. Sol. v.
Texas Health, L.L.C., No. 05-15-01504-CV, 2016 WL 945571, *1 (Tex. App.—Dallas Mar. 14, 2016, no
pet.)(mem. op.)(providing instead that substantial grounds for disagreement exists when there is
disagreement among different courts). Moreover, § 51.014(d)’s requirement of a substantial ground for
difference of opinion is not satisfied where the disagreement is solely between the parties of the dispute
itself. See Patel v. Patel, No. 05-16-00575-CV, 2016 WL 3946932, at *2 (Tex. App.—Dallas July 19,
2016, no pet.) (mem. op.).
Contrary to the plain text of § 51.014(d)’s requirements, the standards applied to determine the
admissibility of expert testimony in a toxic tort case are well-established. As Cox described, “expert
testimony on scientific matters—such as the aerial drift of herbicide particles or the effect of herbicide
exposure on plants—naturally must be grounded in the methods and procedures of science.” Cox, 664
S.W.3d at 73 (quoting E.I. du Pont de Nemours & Co. v. Robinson, 923 S.W.2d 549, 557 (Tex. 1995)
(quoting Daubert v. Merrell Dow Pharms., Inc., 509 U.S. 579, 590 (1993) (cleaned up) (emphasis added));
see also Tex. R. Evid. 702. As applicable to our inquiry, Helena Chemical does not explain how Cox’s
applicability is novel or difficult to ascertain, how the controlling law is doubtful, or whether there is little
authority upon which the trial court could rely. See Singh v. RateGain Travel Techs., Ltd., No. 05-23-
01088-CV, 2023 WL 8642555, at *2 (Tex. App.—Dallas Dec. 14, 2023, no pet.). Indeed, it argues the
opposite, contending “the Texas Supreme Court has already told the trial court and this Court how to
5 resolve [this case].” Whether or not such argument holds merit we cannot say at this juncture and we
express no opinion here. Rather, we are bound to follow the plain text of the statute authorizing
interlocutory appeals, and a permissive appeal from an otherwise unappealable interlocutory order is
allowed only if “there is a substantial ground for difference of opinion” about “a controlling question of
law.” Tex. Civ. Prac. & Rem. Ann. § 51.014(d). Here, although the parties disagree about the soundness
of the trial court’s ruling, the question of law underlying the ruling—that is, the admissibility of scientific
evidence on causation—is well-settled and established by our Texas jurisprudence. See Robinson, 923
S.W.2d at 557; Tex. R. Evid. 702.
For these reasons, we conclude that Helena Chemical has failed to establish the order at issue
involves questions of law as to which there is a substantial ground for difference of opinion. See Tex. Civ.
Prac. & Rem. Code Ann. § 51.014(d), (g). Accordingly, we deny the petition for permissive appeal and
dismiss the appeal. See Tex. R. App. P. 28.3(e)(4), 42.3(a).
GINA M. PALAFOX, Justice
June 30, 2025
Before Salas Mendoza, C.J., Palafox, J., and Rodriguez, C.J. (Ret.) Rodriguez, C.J. (Ret.) (sitting by assignment)