Penn Engineering & Manufacturing Corp and Heyco Products Corp v. Thomas Marsden and HellermannTyton Corp

CourtDistrict Court, E.D. Wisconsin
DecidedDecember 9, 2025
Docket2:25-cv-00467
StatusUnknown

This text of Penn Engineering & Manufacturing Corp and Heyco Products Corp v. Thomas Marsden and HellermannTyton Corp (Penn Engineering & Manufacturing Corp and Heyco Products Corp v. Thomas Marsden and HellermannTyton Corp) is published on Counsel Stack Legal Research, covering District Court, E.D. Wisconsin primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Penn Engineering & Manufacturing Corp and Heyco Products Corp v. Thomas Marsden and HellermannTyton Corp, (E.D. Wis. 2025).

Opinion

UNITED STATES DISTRICT COURT EASTERN DISTRICT OF WISCONSIN

PENN ENGINEERING & MANUFACTURING CORP and HEYCO PRODUCTS CORP,

Plaintiffs, Case No. 25-cv-0467-bhl v.

THOMAS MARSDEN and HELLERMANNTYTON CORP,

Defendants. ______________________________________________________________________________

ORDER DENYING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION ______________________________________________________________________________

Plaintiffs Penn Engineering & Manufacturing Corp. and Heyco Products Corp. allege that Defendant Thomas Marsden, a former Heyco employee, stole their confidential trade secrets as he was leaving Heyco’s employment and then improperly shared them with his new employer, Defendant HellermannTyton Corp. Plaintiffs seek entry of a preliminary injunction (1) barring Defendants from using, possessing, or disclosing the alleged trade secrets and (2) ordering them to return or delete any trade secrets still in their possession. (ECF No. 65 at 2.) The Court ordered expedited discovery and then heard evidence at a two-day hearing on July 16 and 17, 2025. (ECF Nos. 51–52.) At the hearing’s conclusion, the Court granted the parties’ request to file post-hearing briefs. Based on the briefing, the evidence presented, and the relevant law, the Court will deny Plaintiffs’ request for preliminary injunctive relief. Plaintiffs have established a likelihood of success on only one of their claims and, even with respect to that claim, have not shown that injunctive relief is necessary to prevent irreparable harm. FINDINGS OF FACT Penn Engineering is a Delaware corporation headquartered in Danboro, Pennsylvania. (ECF No. 4 ¶6.) Heyco is a subsidiary of Penn Engineering. (Id. ¶7.) Plaintiffs design and manufacture mechanically attached fasteners, installation equipment, and component solutions across several markets, including automotive, consumer electronics, datacom and telecom, electric vehicles, and industrial product applications. (Id. ¶12.) Heyco’s business is focused on wire management, including bushings and plugs, cable wire management, conduits, fittings, and wire ties. (Hr’g Tr. at 70:24–71:4.) HellermannTyton manufactures plastics, such as nylons, for various markets, including the solar market. (ECF No. 4 ¶14.) Within the solar market, HellermannTyton’s business model focuses on utility scale projects (large solar farms providing energy for large utility companies.) (ECF No. 63 ¶8.) Heyco maintains that HellermannTyton is a competitor in the wire management and solar segments of its business. (See Hr’g Tr. at 72:11–22.) HellermannTyton agrees that it and Heyco have overlapping customers but disputes the level to which they are significant competitors. (See id. at 238:15–22.) Marsden is a former Heyco employee, who left Heyco to accept a position at HellermannTyton in early 2025. (Id. at 139:18–140:1.) Marsden worked at Heyco for over nine years, ultimately serving as Director of Product Marketing and Renewable Energies. (Id. at 140:2– 7.) In that position, Marsden lead and directed the Sales Organization, sold Heyco products to the Renewable Energy/Solar and other focus markets, and managed and developed all geographic areas for the foregoing markets and specific sales channels. (ECF No. 7 ¶8.) Marsden worked on product development with the engineering team and product manager, managed the renewable energy sales team, supported that team’s targeting of new accounts, and pursued leads for Heyco’s solar business, including coordinating meetings with customers. (Hr’g Tr. at 73:5–11, 140: 8–18.) As part of his employment with Heyco, Marsden signed an Intellectual Property Assignment & Confidentiality Agreement (“Confidentiality Agreement”). (ECF No. 21-1.) Paragraph 4 of the Confidentiality Agreement required him to return any Heyco property, including information and documents stored in his computer, when his employment ended. (Id. ¶4.) The Confidentiality Agreement does not include any non-compete or non-solicitation provisions. Nor did Marsden sign any other agreements providing for such obligations. (Hr’g Tr. 45:2–7, 140:22–141:2.) On January 17, 2025, Morgan Sullivan, a HellermannTyton recruiter, contacted Marsden concerning an opening for a “Market Development Manager – Renewables” position at the company. (Id. at 209:4–211:6.) From his LinkedIn profile, Sullivan knew that Marsden worked for Heyco but was unaware that Heyco was a HellermannTyton competitor. (Id. at 210:6–11.) After initial email contacts, Sullivan conducted a telephonic screening interview of Marsden on January 31, 2025. (Id. at 212:6–25.) Marsden was later interviewed by Vice President of Marketing Ronald Kovac and two other executives. (Id. at 213:18–21.) During his interview with Kovac, Marsden discussed his role at Heyco and the job duties of the HellermannTyton position. (Id. at 242:18–43:22.) Kovac asked whether Marsden had a noncompete, and Marsden responded that he did not believe so but would need to check to make sure. (Id. at 243:23–244:20.) On February 12, 2025, Sullivan informed Marsden that HellermannTyton planned to extend him an offer and again confirmed that he was not subject to a noncompete. (ECF No. 64 ¶¶116–17.) Later that day, she formally offered him the position. (Id. ¶118.) Over the next several days, Marsden and HellermannTyton representatives negotiated the terms of his offer. (Id. ¶¶121– 23.) On Sunday, February 16, 2025, HellermannTyton arranged for the company’s president, Terry Tuttle, to have coffee with Marsden to discuss him joining the company. (Id. ¶¶124–25.) On Monday, February 17, 2025, Marsden formally accepted and signed the offer of employment. (Id. ¶126.) The next day, Tuesday, February 18, 2025, Marsden informed his Heyco supervisor, Larry Kucera, that he had accepted an offer with a Heyco competitor, although he did not mention HellermannTyton by name. (Hr’g Tr. at 73:21–25.) Marsden told Kucera that he was willing to remain in his job with Heyco for another two weeks to allow for a transition, but Heyco terminated his employment later that day. (Id. at 74:3–75:12.) Following Marsden’s departure, Penn Engineering and Heyco reviewed the history of his computer usage. (Id. at 57:13–25.) The investigation revealed that, in the weeks before his departure, Marsden had forwarded company information to his personal email account. Plaintiffs confirmed that: • On February 4, 2025, Marsden had exported a file containing various sales leads from Heyco’s system. (ECF No. 64 ¶¶138–140; ECF No. 63 ¶30.)

• On February 14, 2025, Marsden similarly exported various Sharepoint files that detailed project information and opportunities. (ECF No. 64 ¶¶211–212, 215– 16, 220–21, 224–25, 227–29.)

• On February 15, 2025, and February 17, 2025, Marsden exported additional Sharepoint files from Heyco. (Id. ¶¶232–33, 236–37, 277–78.)

• On February 17, 2025, Marsden forwarded documents from his Heyco email account to his personal account relating to a Heyco financial acumen training he had attended over a year earlier. (Id. ¶¶189–90.) • On the morning of February 18, 2025, Marsden forwarded to his personal email address an email requesting samples from a potential solar customer or lead. (Id. ¶196.)

On February 26, 2025, Dennis Shea, Penn Engineering’s Chief Legal Officer, emailed Marsden, confronted him with the results of Plaintiffs’ investigation, and accused him of misappropriating Heyco’s trade secret and confidential information. (Hr’g Ex. 1004 at 1.) Shea asserted that Marsden “obviously” took the materials for use at HellermannTyton and directed him to preserve the materials he took along with any communications with his new employer. (Id.) Shea also instructed Marsden not to use copy or disseminate Heyco’s information and warned that his “level of cooperation” would affect how Penn Engineering/Heyco moved forward.

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Penn Engineering & Manufacturing Corp and Heyco Products Corp v. Thomas Marsden and HellermannTyton Corp, Counsel Stack Legal Research, https://law.counselstack.com/opinion/penn-engineering-manufacturing-corp-and-heyco-products-corp-v-thomas-wied-2025.