Lowe v. ShieldMark: Supreme Court Petition Denied in Floor Marking Tape Patent Dispute
Clifford A. Lowe sought Supreme Court review of a patent infringement dispute against ShieldMark, Inc. over US10214664B2, a patent covering floor marking tape technology. The Court denied the petition in 59 days — consistent with the vast majority of certiorari petitions, which are denied at a rate exceeding 97%.
Supreme Court Closes the Door on Floor Marking Tape Patent Appeal
Clifford A. Lowe filed a petition for certiorari with the U.S. Supreme Court on 8 August 2025, seeking review of a patent infringement dispute involving ShieldMark, Inc. and related defendants. The patent at the centre of the dispute, US10214664B2 (application no. US14/747905), covers floor marking tape — adhesive tape systems used for floor safety marking and workplace organisation. Lowe, represented by Renner, Kenner, Greive, Bobak, Taylor & Weber, LPA, was identified as the plaintiff and presumed patent holder asserting infringement claims.
The Supreme Court denied the petition on 6 October 2025, with the basis of termination recorded as ‘Petition Dismissed.’ A denial of certiorari is not a ruling on the merits — the Court does not affirm or endorse the lower court’s decision, but it does leave that decision in place. ShieldMark, represented by Sand Sebolt & Wernow LPA, effectively prevailed at the Supreme Court stage by having the petition dismissed without merits review.
The 59-day resolution is consistent with the typical processing time for denied certiorari petitions, where the Court acts quickly when it opts not to hear a case. The public record does not disclose the substance of the underlying lower-court ruling, the specific claims asserted, or the grounds Lowe advanced for Supreme Court review. What the record does confirm is that the highest appellate avenue in the U.S. federal system has now been closed, making the pre-existing lower court outcome final absent extraordinary procedural developments.
Filing to Petition Dismissed in 59 days
59 days from filing to denial — a typical Supreme Court certiorari review window
Supreme Court denies certiorari: what the dismissal means for both parties
Certiorari denied: no merits ruling, lower decision final
A denial of certiorari by the U.S. Supreme Court is not a judgment on the merits of the underlying patent dispute. It signals only that fewer than four Justices voted to hear the case. The practical effect, however, is decisive: the lower court’s ruling stands as the final word on the matter. Lowe has exhausted all ordinary federal appellate avenues for the infringement claims tied to US10214664B2.
Certiorari deniedLowe’s enforcement path is effectively closed
With the petition denied, Clifford A. Lowe cannot pursue further federal appellate review of the infringement dispute in its current form. The underlying lower-court disposition — unfavourable to Lowe, based on the decision to seek Supreme Court review — now carries finality. Re-litigation on the same claims against ShieldMark would face significant preclusion hurdles. The enforceability of US10214664B2 against these defendants is effectively exhausted through this litigation pathway.
Enforcement pathway exhaustedShieldMark achieves finality without merits adjudication
ShieldMark, Inc. and co-defendants benefit from the denial without the Supreme Court issuing any ruling that could be cited against them. The lower court outcome — which was presumably favourable to ShieldMark — is now final. There is no further appellate exposure on these specific infringement claims. This outcome is commercially valuable: it resolves litigation uncertainty and confirms freedom to continue operations without further risk of reversal from this case.
Defendants: finality achievedFloor marking tape IP: enforcement ceiling now established
The Supreme Court’s denial, combined with the lower court’s disposition, suggests that the specific infringement claims asserted under US10214664B2 against ShieldMark’s products did not succeed. Competitors and manufacturers in the floor marking and workplace safety tape sector should note that this patent has been tested through full federal litigation — including the Supreme Court stage — and did not result in an infringement finding against these defendants. This may inform freedom-to-operate assessments across the sector.
Patent enforcement ceiling setFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Clifford A. Lowe | Individual | Patent holder asserting infringement of US10214664B2 — floor marking tape technologySearch in Eureka ↗ |
| Defendant | ShieldMark, Inc., et al. | Company | ShieldMark, Inc. et al. — floor marking tape manufacturer and alleged infringerSearch in Eureka ↗ |
| Plaintiff counsel | Ray L. Weber | Attorney | Counsel for Clifford A. LoweSearch in Eureka ↗ |
| Plaintiff law firm | Renner, Kenner, Greive, Bobak, Taylor & Weber, LPA | Law Firm | Representing Clifford A. LoweSearch in Eureka ↗ |
| Defendant counsel | James Francis McCarthy III | Attorney | Counsel for ShieldMark, Inc., et al.Search in Eureka ↗ |
| Defendant law firm | Sand Sebolt & Wernow LPA | Law Firm | Representing ShieldMark, Inc., et al.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | U.S. Supreme CourtSearch in Eureka ↗ |
Official order — verbatim text
The recorded verdict — ‘Petition DENIED’ — confirms that the U.S. Supreme Court declined to exercise its discretionary jurisdiction under 28 U.S.C. § 1254. This is not a ruling on whether US10214664B2 was infringed or valid. The denial operates as a procedural termination: the lower court’s judgment becomes final without the Supreme Court expressing any view on its correctness. For Lowe, this closes the federal appellate chain. For ShieldMark, it confers finality on the existing outcome without any Supreme Court precedent being established.
US10214664B2 — Floor Marking Tape Technology
US10214664B2, filed under application number US14/747905, protects technology relating to floor marking tape — adhesive tape systems designed for durable floor safety marking, lane delineation, and workplace organisation. Floor marking tape patents in this category typically cover adhesive formulations, backing materials, surface-adhesion performance under heavy foot and vehicle traffic, and visual marking configurations. The patent was asserted in an infringement action, indicating commercial deployment of the protected technology.
Floor marking tape is a high-volume industrial consumable used across manufacturing, warehousing, logistics, and healthcare facilities — sectors with strong regulatory pressure around safety demarcation under OSHA and similar standards. A patent covering durable adhesive floor marking technology in this space carries meaningful commercial leverage, as switching costs for facility managers are low and product differentiation is primarily driven by adhesion performance and durability claims. The full litigation cycle reached the Supreme Court, suggesting the underlying dispute involved commercially significant product lines.
Should your team run an FTO against US10214664B2?
Any manufacturer, distributor, or OEM supplier operating in the adhesive floor marking tape category should treat US10214664B2 as an active FTO concern. The patent remains in force despite the litigation outcome — certiorari denial does not cancel or invalidate it. Companies developing floor tape products with overlapping adhesive systems, backing configurations, or marking geometries face residual exposure, particularly if their product specifications were not the subject of the Lowe v. ShieldMark proceedings.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map claim-level exposure against US10214664B2 rapidly. By running a structured freedom-to-operate analysis, teams can identify which independent and dependent claims pose genuine overlap risk, surface prior art that may support post-grant challenge strategies, and monitor for any assignment or licensing activity that could signal renewed assertion. Start with a claim chart comparison against your current or planned floor marking tape product specifications.
Run a freedom-to-operate analysis on US10214664B2 to assess your product’s exposure
Run FTO in Eureka →Similar Floor Marking Tape and Adhesive Product Patent Cases
Explore related patent infringement disputes in adhesive floor marking and industrial tape technology reviewed by U.S. federal courts.
What this case signals for the floor marking tape IP landscape
A Supreme Court denial following an infringement action carries meaningful signals for how US10214664B2 may be enforced going forward.
Certiorari denial sets a practical enforcement ceiling for this patent
US10214664B2 has now been tested at the highest federal appellate level. The denial does not invalidate the patent, but it confirms the lower court’s resolution is final against ShieldMark. Other floor marking tape manufacturers facing similar claims can reference this litigation history as part of their defence strategy and freedom-to-operate analysis.
ShieldMark’s product design may now carry implicit judicial endorsement
With the case closed at the Supreme Court level, ShieldMark’s floor marking tape products emerged from full-cycle patent infringement litigation without an adverse finding. Competitors assessing market entry into adhesive floor tape categories should monitor ShieldMark’s product specifications as a potential design-around benchmark.
Lowe v ShieldMark — key questions answered
The denial means the Supreme Court declined to hear the case, leaving the lower court’s decision final. It is not a ruling on whether US10214664B2 was infringed — the Court expressed no view on the merits. Clifford A. Lowe has now exhausted ordinary federal appellate remedies in this infringement action against ShieldMark, Inc.
Yes. A denial of certiorari does not invalidate or cancel a patent. US10214664B2 remains in force and could theoretically be asserted against other parties or on different claim theories. The denial only closes the specific infringement claims brought by Lowe against ShieldMark in this case.
The patent at issue is US10214664B2, filed under application number US14/747905, covering floor marking tape technology. The product involved is adhesive floor marking tape used for workplace safety demarcation and floor organisation. The case was an infringement action filed by Clifford A. Lowe against ShieldMark, Inc. et al.
The public record does not disclose the specific grounds advanced for Supreme Court review. Typically, certiorari is sought when a party argues the lower courts misapplied patent law, created a circuit split, or decided a question of federal importance. The Court’s denial without comment means none of these grounds were found sufficient by at least four Justices.
ShieldMark, Inc. and co-defendants achieved finality in this infringement dispute without any Supreme Court merits ruling against them. The lower court outcome — presumed favourable to ShieldMark — is now final. ShieldMark faces no further appellate exposure from Lowe’s claims under US10214664B2 in this proceeding, providing commercial certainty for its floor marking tape operations.
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