Long-Lok, LLC v. Safety Socket, LLC

District Court, S.D. Ohio·Decided August 21, 2026·No. 1:25-cv-00346·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF OHIO WESTERN DIVISION

LONG-LOK, LLC, : : Plaintiff, : Case No. 1:25-cv-346 : vs. : Judge Jeffery P. Hopkins : SAFETY SOCKET, LLC, : : Defendant. :

OPINION AND ORDER

This case arises from a trademark dispute between parties that had done business together for an extended period, Plaintiff Long-Lok, LLC (“Plaintiff” or “Long-Lok”) and Defendant Safety Socket, LLC (“Defendant” or “Safety Socket”). Well into the parties’ history together, Safety Socket allegedly threatened Long-Lok with allegations of trademark infringement. In turn, Long-Lok brought this action for trademark cancellation as well as declaratory and injunctive relief contending that the trademark Safety Socket seeks to enforce for fasteners it manufactures is merely functional or has been abandoned, terms of art defined under the Lanham Act, and addressed later in the opinion, but for now meaning that the mark is unenforceable. See 15 U.S.C. § 1064(3). Safety Socket is before the Court seeking partial dismissal of two of Long-Lok’s claims, namely Counts One and Eight of the Amended Complaint. Doc. 18. For the reasons stated below, Safety Socket’s now fully-briefed Partial Motion to Dismiss (Doc. 18) is GRANTED IN PART and DENIED IN PART. I. BACKGROUND Plaintiff, Long-Lok, operates in the aerospace industry. Am. Compl., Doc. 13, ¶¶ 2, 13. It is an engineered-fastener company that modifies existing fasteners to make them self- locking and self-sealing for its aerospace customers. Id. And, until it got out of the fabricating

business, Defendant Safety Socket LLC had for many years been a manufacturer of high- strength fasteners along with socket-head cap screws, for commercial and military applications. Id. ¶ 12. This case concerns modifications made by Plaintiff, Long-Lok, to Defendant, Safety Socket’s socket-head fasteners. For more than fifty years, Long-Lok engineered self-locking fasteners used in aerospace applications. Id. ¶ 2. Rather than manufacture fasteners from raw materials, Long- Lok simply took standard fasteners supplied by a customer or purchased fasteners requested by a customer from a manufacturer or distributor, like Defendant Safety Socket, and modified those products for them for use in the aerospace industry. Id. ¶¶ 3, 18.

Long-Lok alleges that it has had a business relationship with Safety Socket for many years. Since at least 2005, Safety Socket has submitted purchase orders requesting that Long- Lok add self-locking mechanisms to Safety Socket fasteners and then return the modified fasteners to Safety Socket for resale. Id. ¶ 27. And, since at least 2010, Long-Lok has purchased from Safety Socket fasteners and modified them for customers other than Safety Socket. Id. ¶ 28. In performing this work, Long-Lok adds one of three self-locking mechanisms: a Long-Lok strip, Poly-Lok patch, or Tek-Lok pellet. Id. ¶¶ 13–16, 18. Long- Lok alleges that these mechanisms reduce vibration and are visible on the exterior of the fastener. Id. ¶¶ 13, 17. Long-Lok further alleges that it performs all modifications according to customer specifications and does not maintain an inventory of Safety Socket fasteners equipped with a self-locking mechanism. Id. ¶ 19. Long-Lok maintains that, whenever a customer provides the fastener, it provides documentation identifying the modifications it made. Id. ¶ 22. Wherever Long-Lok procures

the fastener, it sends the completed part with documents reflecting the fastener’s chain of custody, including the original manufacturer’s paperwork and Long-Lok’s certification concerning its modifications. Id. According to Long-Lok, it does not alter paperwork prepared by Safety Socket; instead, it adds its own paperwork and transmits the complete certification packet to the customer. Id. Safety Socket claims ownership of U.S. Trademark Registration No. 4,903,629, a design mark depicting two bands of diagonal knurls around a fastener head (the “Banded Knurl Mark”). Id. ¶ 24. Safety Socket also claims ownership of a SAFETY SOCKET word mark and a stylized SAFETY SOCKET mark. Id. ¶ 26. Most of the Safety Socket fasteners

that Long-Lok modifies allegedly bear the Banded Knurl Mark. Id. ¶ 30. Long-Lok does not remove the mark in the course of adding its self-locking mechanisms. Id. Long-Lok alleges, however, that the modification is apparent because the self-locking mechanism is visible and, for certain aerospace parts, Long-Lok adds a six-dot head marking to signify that the part includes a self-locking mechanism. Id. ¶¶ 21, 30. Long-Lok also alleges that the paperwork it supplies customers identifies Safety Socket as the original manufacturer and identifies Long- Lok as the entity responsible for the strip, patch, or pellet modification. Id. ¶ 31. According to Long-Lok, Safety Socket transitioned in 2023 from a manufacturing-and- service company to a company providing services. Also according to Long-Lok, Safety Socket

now provides services for customers that include consulting regarding product failures, standards, materials transitions, and litigation. Id. Long-Lok alleges that Safety Socket therefore ceased manufacturing products, including the fasteners at issue, in 2023. Id. ¶ 42. Long-Lok further alleges that Safety Socket has no intention to resume use of the Banded Knurl Mark because the mark was used exclusively on Safety Socket’s manufactured fasteners

and Safety Socket had announced its transition to a purely service company. Id. ¶ 43. In early March 2024, representatives of the parties attended a National Aerospace Standards Committee meeting concerning revisions to a fastener-procurement specification. Id. ¶ 33. After a Long-Lok representative voiced disagreement with Safety Socket founder Jim Erb’s proposed language regarding trademark infringement and liability, the parties subsequently discussed by telephone Mr. Erb’s position on trademark infringement. Id. ¶ 34. Those discussions apparently did not go well because on March 19, 2025, Safety Socket sent Long-Lok a cease-and-desist letter. Id. ¶ 35. The letter asserted that Long-Lok’s modification, distribution, and sale of Safety Socket fasteners infringed Safety Socket’s trademark rights and

violated other state and federal laws. Id. Safety Socket also commented in the letter that it had successfully litigated similar disputes involving entities that modified its parts and placed them into commerce. Id. Undaunted by Safety Socket’s cease-and-desist letter, Long-Lok filed the current eight- count Amended Complaint presently before the Court. Counts One and Eight are the only ones at issue here. In Count One, Long-Lok seeks cancellation of the Banded Knurl Mark under 15 U.S.C. § 1064. Id. ¶¶ 36–44. Long-Lok alleges that the mark is functional because the two bands of diagonal knurls provide a better grip when using the fastener to affix components, are essential to the fastener’s use or purpose, and affect its quality. Id. ¶¶ 25, 39.

Long-Lok further alleges that Safety Socket’s exclusive use of the feature hinders competitors’ ability to create an equivalent gripping mechanism. Id. ¶¶ 25, 41. As an alternative basis for cancellation, Long-Lok alleges that Safety Socket abandoned the Banded Knurl Mark when it ceased manufacturing products in 2023 and did not intend to resume use of the mark. Id. ¶¶ 42–44.

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