ZoomInfo Technologies LLC v. Zenleads Inc., d/b/a Apollo.io

CourtDistrict Court, D. Delaware
DecidedMay 6, 2026
Docket1:25-cv-00324
StatusUnknown

This text of ZoomInfo Technologies LLC v. Zenleads Inc., d/b/a Apollo.io (ZoomInfo Technologies LLC v. Zenleads Inc., d/b/a Apollo.io) is published on Counsel Stack Legal Research, covering District Court, D. Delaware primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
ZoomInfo Technologies LLC v. Zenleads Inc., d/b/a Apollo.io, (D. Del. 2026).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE

ZOOMINFO TECHNOLOGIES LLC,

Plaintiff, Before: Jennifer Choe-Groves, Judge v. Court No. 1:25-cv-00324-JCG ZENLEADS INC., d/b/a APOLLO.IO,

Defendant.

OPINION AND ORDER

[Denying in part and granting in part Plaintiff’s Motion to Dismiss.]

Dated: May 6, 2026

Monté T. Squire, Duane Morris LLP, of Wilmington, DE; Tia D. Fenton and Elissa L. Sanford, Duane Morris LLP, of Washington, D.C.; Gilbert A. Greene, Duane Morris LLP, of Austin, TX; Matthew C. Gaudet, Duane Morris LLP, of Atlanta, GA; Brianna M. Vinci and Sean P. McConnel, Duane Morris LLP, of Philadelphia, PA. Attorneys for Plaintiff ZoomInfo Technologies LLC.

Adam W. Poff, Anne Shea Gaza, and Alexis N. Stombaugh, Young Conaway Stargatt & Taylor, LLP, of Wilmington, DE; David B. Rochelson, Garwin Gerstein & Fisher LLP, of New York, NY; Katherine Vidal and Joseph C. Masullo, Winston & Strawn LLP, of Washington, D.C.; Samantha M. Lerner, Winston & Strawn LLP, of Chicago, IL; Eimeric Reig-Plessis, Winston & Strawn LLP, of San Francisco, CA. Attorneys for Defendant Zenleads Inc., d/b/a Apollo.io.

Choe-Groves, Judge: Before the Court is an action by Plaintiff ZoomInfo Technologies LLC (“Plaintiff” or ZoomInfo”) against Defendant Zenleads Inc., doing business as Apollo.io (“Defendant” or “Apollo”), for patent infringement. After Plaintiff amended its Complaint, Defendant filed a Motion to Dismiss the

First Amended Complaint, which the Court denied. See Opinion & Order (Dec. 15, 2025) (D.I. 60). Defendant filed an answer and brought four counterclaims involving allegations of monopolization, false advertising, and violations of

Delaware business and tort law against Plaintiff. Def.’s Answer, Affirmative Def., & Counterclaims Pl. First Am. Compl. (“Counterclaims”) (D.I. 70,73).1 Plaintiff filed a motion to dismiss Defendant’s counterclaims for failure to state plausible claims for relief. Pl. Mot. Dismiss Def.’s Counterclaim Counts I–IV (“Motion to

Dismiss”) (D.I. 88); Pl. Opening Br. Supp. Mot. Dismiss Counterclaim Counts I– IV (“Pl.’s Br.”) (D.I. 89, 92). The Court held oral argument on the Motion to Dismiss on April 10, 2026. Ninth Am. Sched. Order (Mar. 27, 2026) (D.I. 103).

For the reasons set forth below, Plaintiff’s Motion to Dismiss is denied in part and granted in part.

1 Citations to Defendant’s counterclaims refer to the paragraphs beginning on page fourteen of Defendant’s Answer, Affirmative Defenses, and Counterclaims to Plaintiff’s First Amended Complaint. The Court refers to Apollo and ZoomInfo as Defendant and Plaintiff, respectively, with the knowledge that Apollo now presents as the Counterclaim Plaintiff and ZoomInfo as the Counterclaim Defendant. BACKGROUND ZoomInfo and Apollo are competitors in the market for business-to-business

sales intelligence data, that both offer products and services that help sales teams identify leads, contact potential customers, and make sales. Counterclaims at ¶ 2. Apollo alleges that ZoomInfo holds a dominant role in the industry and that, in the

past few years, Apollo began to represent the first genuine challenge to ZoomInfo’s dominance. Id. at ¶¶ 4–5. Due to Apollo’s growth and full suite of services, Apollo claims that ZoomInfo began an anticompetitive scheme to halt Apollo’s momentum. Id. at ¶¶ 5–6. Apollo alleges that ZoomInfo crafted a scheme

involving three components: (1) acquiring its most significant competitors and their patents, giving ZoomInfo an exclusive right to patents to empower the company to exclude competitors from the marketplace; (2) weaponizing the newly-

acquired EverString patents against Apollo by filing this action; and (3) engaging in a campaign to sow fear, uncertainty, and doubt about Apollo’s product in the marketplace. Id. at ¶¶ 6–9. ZoomInfo allegedly has acquired and maintains monopoly power over the market due to this anticompetitive scheme, and has

caused Apollo to lose profits, prospective business relationships, diverted sales, and suffer damage to its reputation and goodwill. Id. at ¶¶ 10–11. The campaign to stoke fear, uncertainty, and doubt about Apollo’s products

allegedly involved ZoomInfo spreading deceptive and misleading representations about the quality and reliability of Apollo’s data and products, in both public and private to existing and prospective customers. Id. at ¶ 9. Apollo alleges that

ZoomInfo has discouraged prospective customers from subscribing to Apollo’s services by referring to the present patent litigation, and customers have referred to ZoomInfo’s campaign as reason for not purchasing Apollo’s services. Id. Apollo

claims that ZoomInfo’s conduct has caused harm to itself, competition at large, and has injured purchasers who Apollo alleges are forced to pay supracompetitive prices for go-to-market services. Id. at ¶¶ 11–13. JURISDICTION & LEGAL STANDARD

The Court has jurisdiction pursuant to 28 U.S.C. §§ 1331 and 1337, which grant the Court jurisdiction over civil actions arising under commerce or antitrust regulation. 28 U.S.C. §§ 1331, 1337; Sherman Antitrust Act, 15 U.S.C. § 4;

Clayton Antitrust Act, 15 U.S.C. § 26. The Lanham Act grants the Court jurisdiction over actions arising under false designations of origin and false descriptions. 15 U.S.C. §§ 1121, 1125. The Court maintains jurisdiction over civil actions relating to patents, plant variety protection, copyright, and trademarks. 28

U.S.C. § 1338. The Court exercises supplemental jurisdiction over the remaining state law claims, involving Delaware’s Deceptive Trade Practices Act and tortious interference with prospective business advantage, because all claims arise out of

the same facts and judicial efficiency favors trying the claims in one judicial proceeding. 28 U.S.C. § 1367; see Lyon v. Whisman, 45 F.3d 758, 760 (3d Cir. 1995).

Federal Rule of Civil Procedure 8(a) requires that pleadings contain a short and plain statement of the claim showing that the pleader is entitled to relief. Fed. R. Civ. P. 8(a)(2). If pleadings fail to state a claim, in whole or in part, on which a

court may grant relief, a defendant may seek to dismiss a complaint under Federal Rule of Civil Procedure 12(b)(6). Fed. R. Civ. P. 12(b)(6). Courts use the same standard in ruling on a motion to dismiss a counterclaim under Rule 12(b)(6) as is used in assessing a claim in a complaint. Liqwd, Inc. v. L’Oréal USA, Inc., No.

CV 17-14-JFB-SRF, 2019 WL 10252725, at *4 (D. Del. Apr. 30, 2019) (quoting Identix Pharms., Inc. v. Gilead Sciences, Inc., C.A. No. 13-1987-LPS-CJB, 2014 WL 4222902, at *5 (D. Del. Aug. 25, 2014)).

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Brown Shoe Co. v. United States
370 U.S. 294 (Supreme Court, 1962)
United Mine Workers v. Pennington
381 U.S. 657 (Supreme Court, 1965)
United States v. Grinnell Corp.
384 U.S. 563 (Supreme Court, 1966)
Spectrum Sports, Inc. v. McQuillan
506 U.S. 447 (Supreme Court, 1993)
Bell Atlantic Corp. v. Twombly
550 U.S. 544 (Supreme Court, 2007)
Ashcroft v. Iqbal
556 U.S. 662 (Supreme Court, 2009)
West Penn Allegheny Health System, Inc. v. UPMC
627 F.3d 85 (Third Circuit, 2010)
Pernod Ricard USA, LLC v. Bacardi U.S.A., Inc.
653 F.3d 241 (Third Circuit, 2011)
Nobelpharma Ab v. Implant Innovations, Inc.
141 F.3d 1059 (Federal Circuit, 1998)
Ethypharm S.A. France v. Abbott Laboratories
707 F.3d 223 (Third Circuit, 2013)
In Re Exxon Mobil Corp. Securities Litigation
500 F.3d 189 (Third Circuit, 2007)
Broadcom Corp. v. Qualcomm Inc.
501 F.3d 297 (Third Circuit, 2007)

Cite This Page — Counsel Stack

Bluebook (online)
ZoomInfo Technologies LLC v. Zenleads Inc., d/b/a Apollo.io, Counsel Stack Legal Research, https://law.counselstack.com/opinion/zoominfo-technologies-llc-v-zenleads-inc-dba-apolloio-ded-2026.