Miller Manufacturing Company v. Tractor Supply Company

Background

Plaintiff Miller Manufacturing Company ("Miller") designs, manufactures, and sells farm, ranch, and pet products. Defendant Tractor Supply Company ("TSC") is a large retailer of farm and pet supply products, operating both physical stores and a website listing approximately 349,000 distinct products. The two companies had a longstanding commercial relationship, with TSC selling Miller products for years.

Miller holds several federally registered trademarks on the Principal Register of the United States Patent and Trademark Office (USPTO), including TROUGH-O-MATIC® (for automatic float valves), LITTLE GIANT® (for poultry and stock waterers and stock tanks), and PET LODGE® (for portable kennels and automated pet feeders and waterers).

Alleged Infringement and Pre-Litigation Events

In 2024, Miller discovered that TSC was using Miller's product images, trademarks, and warranty materials on TSC's website to advertise non-Miller products sold by third-party vendors such as AgraTronix. A specific customer complaint arose on November 13, 2024, when a customer who intended to purchase a Miller float valve received an AgraTronix float valve instead. Miller emailed TSC that same day requesting removal of Miller's product images. TSC removed the offending webpage on November 21, 2024.

In February 2025, the webpage was reactivated — TSC attributed this to a new employee who was unaware the page had been intentionally removed. In July 2025, Miller discovered additional reposted pages advertising non-Miller products using Miller images and warranties. Miller filed this lawsuit on July 31, 2025, asserting claims for trademark infringement, false advertising, patent infringement, deceptive trade practices, and unfair competition, and shortly thereafter filed a motion for a preliminary injunction.

Stipulation and Mediation

On October 30, 2025, the parties stipulated to stay the litigation pending mediation. As part of that stipulation, TSC agreed to take down all webpages advertising the accused products, and Miller agreed to withdraw its first motion for a preliminary injunction. TSC further agreed not to repost those pages without either Miller's approval (provided such approval was not unreasonably withheld) or court approval.

Mediation occurred on February 17, 2026, but did not result in a settlement. The court lifted the stay. On February 2, 2026, TSC sent Miller revised versions of the disputed webpages — including revised AgraTronix float valve pages — for approval. Miller did not approve or respond to the revised pages, contending the issue was wrapped up in broader settlement negotiations.

March 2026 Reposting and Renewed Motion

On March 4, 2026, Miller discovered that TSC had again posted three webpages advertising the AgraTronix float valve using Miller content, specifically making available for download user manuals bearing Miller's LITTLE GIANT® mark and using a marketing video featuring that mark in connection with non-Miller products. TSC asserts it independently learned of the reposting from a third party on March 10, 2026 — and that Miller never directly contacted TSC to flag the discovery. TSC removed all Miller content within hours and fully took down the pages by March 13, 2026. TSC attributed the reposting to an internal technical error: when TSC sourced replacement products from new vendors, it reused Stock Keeping Unit (SKU) numbers previously associated with Miller products, which caused Miller content to be included automatically.

On March 18, 2026 — five days after the pages were taken down — Miller filed the renewed motion for a preliminary injunction that is the subject of this opinion.

Legal Standard for Preliminary Injunction

The court applied the four-factor Dataphase test for preliminary injunctions (from Dataphase Systems, Inc. v. C L Systems, Inc., 640 F.2d 109 (8th Cir. 1981)): (1) the threat of irreparable harm to the moving party; (2) the balance of harms between the parties; (3) the moving party's likelihood of success on the merits; and (4) the public interest. A preliminary injunction is an "extraordinary remedy," and the burden is on the party seeking it.

Analysis: Mootness and Irreparable Harm

The court began and ended its analysis with the question of mootness — specifically, whether Miller could demonstrate a threat of irreparable harm given that TSC had already ceased the allegedly infringing conduct. Irreparable harm, in this context, means harm for which money damages would not provide full compensation, such as damage to a brand's reputation or goodwill.

TSC argued that Miller could not show irreparable harm because TSC had removed all offending content, the webpages at issue had been down since March 13, 2026, and Miller's motion was therefore moot. The court agreed.

The court acknowledged that a trademark infringement claim is not automatically mooted simply because a defendant stops using a mark — citing Rainforest Cafe, Inc. v. Amazon, Inc., 86 F. Supp. 2d 866 (D. Minn. 1999), which held that voluntary cessation of infringing use does not eliminate liability for past infringement. However, the court recognized that voluntary cessation is highly relevant to whether injunctive relief is warranted. The court distinguished cases where injunctions were granted despite voluntary cessation — particularly Surdyk's Liquor, Inc. v. MGM Liquor Stores, Inc., 83 F. Supp. 2d 1016 (D. Minn. 2000), where the defendant gave no indication it intended to halt its infringing advertising — from the facts here, where TSC had affirmatively stated it would not reactivate the accused webpages without approval and had implemented concrete internal safeguards.

The court also distinguished DF Institute, Inc. v. Marketshare Eds, No. 07-cv-1348, 2007 WL 1589525 (D. Minn. June 1, 2007), a copyright case in which the defendant admitted its revised materials continued to contain allegedly infringing content. Here, TSC made no such admission and asserted that all allegedly infringing content had been removed.

The court found that although TSC's compliance had not been seamless — the offending pages were reposted twice after the initial removal — the evidence did not demonstrate wrongful intent or a likelihood that future unauthorized postings would occur. The court was persuaded that the repostings were inadvertent and were corrected quickly upon discovery. TSC's safeguards — deactivating the relevant SKUs, disabling automated publishing functions, and requiring legal department review before any related content goes live — further supported the conclusion that the threat of future harm was insufficient to justify emergency injunctive relief.

Result

The court denied Miller's renewed motion for a preliminary injunction as moot. The court explicitly noted that the underlying trademark and other claims remain pending and will be resolved at a later stage of the litigation. The court also issued a warning: if TSC's content reappears using Miller's marks in the future, any claim of inadvertence will carry "far less weight."

Important Limitation

The denial is specifically as to the preliminary injunction only. The merits of Miller's claims for trademark infringement, false advertising, patent infringement, deceptive trade practices, and unfair competition have not been decided and remain active in the case.