ABC Companies v. DEF Inc.: Consent Judgment & Permanent Injunction in Eyelash Extension Patent Dispute
ABC Companies filed suit against DEF, Inc. in the Southern District of New York asserting three eyelash extension patents covering DIY lash cluster systems. The case resolved in 98 days via a stipulated consent judgment under which DEF admitted patent validity and accepted a permanent injunction barring future infringement.
A swift consent judgment cements patent validity and bars DEF from the DIY lash market
On 21 November 2024, ABC Companies filed a patent infringement action against DEF, Inc. in the Southern District of New York before Judge Jennifer L. Rochon. The complaint asserted three patents — US11219260, US11253020, and US11234472 — covering eyelash extension technology, specifically targeting DEF’s B31 mixed tray of lash clusters, DIY Lash Extension Kit, and DIY luxury lash extension system products.
The parties resolved the dispute on 27 February 2025 through a Stipulated Final Judgment Upon Consent. Critically, DEF formally recognised the validity and enforceability of all three patents and agreed never to challenge them. The court entered a permanent injunction prohibiting DEF and all related parties from manufacturing, importing, using, selling, or offering for sale any eyelash extension product that meets the claims of the asserted patents, including colorably similar variants. The lawsuit was dismissed without prejudice, with the court expressly retaining jurisdiction to construe and enforce the injunction.
Resolution in 98 days — before substantive motion practice concluded — suggests DEF concluded the validity position was untenable or that continued litigation risk outweighed the commercial cost of exiting the product line. The public record does not disclose any royalty arrangement or financial settlement, and each party bears its own costs. The retained court jurisdiction and non-challenge covenant provide ABC Companies with unusually durable enforcement leverage going forward.
Filing to Consent Judgment in 98 days
Resolved in 98 days — well below the multi-year average for patent infringement trials in S.D.N.Y.
Consent judgment entered: what the permanent injunction means for both parties
Consent judgment: dismissal without prejudice plus retained jurisdiction
A stipulated consent judgment is a court-entered order agreed to by both parties. Here the dismissal is technically without prejudice, but the permanent injunction survives dismissal because the court expressly retained jurisdiction to enforce it. This structure is common when a plaintiff’s primary goal is market exclusion rather than damages — the injunction delivers immediate commercial protection without the cost and uncertainty of trial.
Permanent injunction securedABC Companies locks in validity admission and market exclusion
ABC Companies obtained the two most commercially valuable outcomes short of a damages award: a defendant-acknowledged validity finding across all three patents, and a broad permanent injunction covering products ‘no more than colorably different’ from the infringing products. The non-challenge covenant prevents DEF from later pursuing IPR or declaratory judgment. The $5,000 cash security was also released to plaintiff’s counsel, Epstein Drangel.
Non-challenge covenant includedDEF admits validity and exits the DIY lash cluster segment
DEF, Inc. conceded patent validity — a significant admission that limits future legal options. The injunction extends to all successors, assigns, and entities in active concert with DEF, closing off workarounds via corporate restructuring or third-party distribution. Each party bearing its own costs suggests no financial payment to ABC, but DEF’s product line is permanently barred from the US market while the patents remain in force.
Validity admitted by defendantColorably different standard raises the bar for the entire DIY lash sector
The injunction’s ‘colorably different’ language means minor product modifications will not necessarily provide a safe harbour for DEF or, by precedent signal, for other market participants in the DIY eyelash extension space. Competitors holding similar lash cluster product lines should treat these three patents as presumptively valid following the consent judgment and evaluate freedom-to-operate exposure accordingly. The 98-day resolution timeline also signals ABC Companies’ willingness to move aggressively.
Sector-wide FTO signalFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ABC Companies | Individual | Eyelash extension IP holder — asserting US11219260, US11253020, and US11234472Search in Eureka ↗ |
| Defendant | DEF, Inc. | Company | DEF, Inc. — maker of DIY lash cluster and eyelash extension kit productsSearch in Eureka ↗ |
| Presiding judge | Judge Jennifer L. Rochon | Judge | New York Southern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The Stipulated Final Judgment is notable for combining a technical dismissal without prejudice with substantive, permanent injunctive relief — an approach that preserves ABC’s ability to return to court for contempt enforcement without re-litigating infringement. DEF’s explicit recognition of patent validity and the non-challenge covenant are unusual concessions typically associated with defendants who assessed their invalidity arguments as weak. The ‘colorably different’ threshold built into the injunction’s scope provides ABC with a broad enforcement perimeter beyond the specific named products.
US11253020B2 — DIY eyelash extension cluster technology
US11253020B2 (application no. US17/342355) is one of three patents asserted by ABC Companies, all covering eyelash extension technology in the DIY consumer segment. The patents protect specific product structures and methods associated with lash cluster trays and DIY lash extension kits — a fast-growing category driven by consumer demand for salon-quality results at home. The consent judgment confirms the patents are valid and enforceable, providing ABC with strong exclusivity over the claimed configurations.
For competitors in the beauty and cosmetics sector, three court-affirmed-by-consent patents covering DIY lash cluster systems represent a meaningful barrier to entry. The breadth of the injunction — extending to colorably different products — suggests the claims are mapped closely to commercial product features rather than abstract methods. R&D teams developing competing lash extension systems should conduct freedom-to-operate analysis against all three patent numbers before finalising product design, particularly for cluster tray form factors and application system kits.
Should you run an FTO against US11253020B2 and the ABC Companies lash patent family?
Any company manufacturing, importing, or selling DIY eyelash extension products — including lash cluster trays, pre-made lash kits, and application system bundles — in the US market should assess exposure against US11219260, US11253020, and US11234472. The consent judgment confirms validity and the injunction’s ‘colorably different’ language means product differentiation alone may not be sufficient to avoid infringement risk. Online marketplace sellers and beauty brands expanding into the DIY lash segment are especially exposed.
PatSnap Eureka’s FTO Search Agent can map your product’s technical features against the claim language of all three patents, identify design-around opportunities, and surface prior art that could inform any future validity challenge strategy. Eureka also tracks prosecution history and continuation applications — relevant here given that three closely related patents have already been asserted together, suggesting a coordinated patent family filing strategy by ABC Companies.
Run a freedom-to-operate analysis on US11253020B2 to assess your product’s exposure
Run FTO in Eureka →Similar eyelash extension and beauty product patent infringement cases in S.D.N.Y.
Cases involving eyelash extension and DIY beauty product patents litigated in the Southern District of New York, resolved by consent judgment or injunction.
What this case signals for the eyelash extension and beauty IP landscape
A rapid consent judgment with validity admission reshapes the competitive dynamics around DIY lash cluster technology in the US market.
Non-challenge covenants in consent judgments create durable patent moats
By securing DEF’s explicit acknowledgment of validity and a non-challenge covenant, ABC Companies effectively insulated all three eyelash extension patents from inter partes review by this defendant. Other beauty-sector patent holders facing serial challengers should consider whether consent judgment terms can achieve the same insulation.
98-day resolution suggests strong underlying patent position
The speed of resolution — before any claim construction or substantive motion practice — is consistent with a defendant that assessed the infringement and validity positions as unfavourable. For IP teams in adjacent beauty and personal care product categories, this timeline suggests ABC’s patent claims may be drafted with precision around commercial product features.
Companies v DEF — key questions answered
The court entered a Stipulated Final Judgment Upon Consent on 27 February 2025. DEF admitted the validity and enforceability of three eyelash extension patents and was permanently enjoined from manufacturing, importing, selling, or offering for sale any infringing eyelash extension products in the US. The case was dismissed without prejudice with the court retaining jurisdiction to enforce the injunction.
ABC Companies asserted US Patent No. 11,219,260, US Patent No. 11,253,020, and US Patent No. 11,234,472. All three patents cover eyelash extension technology and were confirmed valid and enforceable in the consent judgment. The products accused of infringement included the B31 mixed tray of lash clusters, DIY Lash Extension Kit, and DIY luxury lash extension system.
In this context, dismissal without prejudice means ABC Companies could technically refile certain claims, but the permanent injunction survives the dismissal. The court expressly retained jurisdiction to enforce the injunction, meaning ABC can seek contempt sanctions if DEF violates its terms — without needing to file a new lawsuit. This structure is common in consent judgments focused on market exclusion rather than damages.
Yes. The consent judgment explicitly states that DEF ‘having hereby recognized the validity and enforceability of the Patents, shall not challenge or contest, directly or indirectly, the validity, ownership or registration of the same.’ This non-challenge covenant is a significant concession that prevents DEF from pursuing inter partes review or declaratory judgment proceedings against the three patents.
The case resolved in 98 days from filing to the consent judgment on 27 February 2025. This is notably fast for patent infringement litigation in S.D.N.Y., where cases often take two or more years. The speed of resolution is consistent with a defendant that assessed its invalidity and non-infringement arguments as unlikely to succeed, or that determined commercial exit from the product line was preferable to sustained litigation costs.
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