Masimo Corporation
Trademark enforcement profile · on record 2002–2026
Masimo Corporation has filed federal trademark or copyright enforcement actions. On record (2002–2026): 2 federal trademark or copyright lawsuits; 53 oppositions and cancellation petitions at the USPTO Trademark Trial and Appeal Board (prevailed in 82% of merits decisions).
Data summary based on public records (USPTO TTAB proceedings and PACER/CourtListener federal court dockets). Figures reflect filings on record, not a characterization of the merits or good faith of any individual action. Not legal advice.
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Federal court filings
At the Trademark Trial and Appeal Board (TTAB)
Prevailed in 82% of proceedings the Board actually decided on the merits (settled and withdrawn proceedings excluded from this calculation).
Designs Masimo Corporation has opposed
Real trademark applications Masimo Corporation challenged at the USPTO — the kind of design that draws an opposition. If your artwork looks like one of these, expect pushback. Each links to its USPTO docket.
Source: USPTO Trademark Trial and Appeal Board records. “Prevailed” means Masimo Corporation got the outcome it sought; settled/withdrawn cases ended without a Board ruling on the merits. Images from public USPTO records.
Marks Masimo Corporation has asserted in proceedings
| Mark | Serial | Proceedings | Won / lost |
|---|---|---|---|
| RADICALtext | 75625874 | 19 | 15 / 3 |
| RADICAL-7text | 85255145 | 18 | 15 / 2 |
| MASIMO ANIMAL HEALTH | 87259496 | 16 | 14 / 1 |
| (design-only mark) | 74442461 | 15 | 13 / 1 |
| SETtext | 74636576 | 12 | 6 / 4 |
| RAD-5text | 78288823 | 10 | 7 / 2 |
| RAD-8text | 78421156 | 10 | 7 / 2 |
| ROOTtext | 87650621 | 9 | 7 / 1 |
| ROOTtext | 85480594 | 9 | 7 / 1 |
| (design-only mark) | 85644006 | 9 | 8 / 0 |
| RAINBOW SETtext | 86668636 | 9 | 4 / 3 |
| RD RAINBOW SETtext | 86668594 | 9 | 4 / 3 |
| RD SETtext | 86668618 | 8 | 3 / 3 |
| RAD-5 | 88768153 | 8 | 6 / 1 |
| RD RAINBOW LITE SETtext | 87132512 | 8 | 4 / 3 |
| RADICAL-7 | 88768145 | 7 | 6 / 1 |
| RAD-8 | 88768141 | 6 | 6 / 0 |
| RADtext | 76078351 | 5 | 2 / 2 |
| RADLINKtext | 78288842 | 5 | 3 / 2 |
| RAD 5Vtext | 77950760 | 5 | 2 / 2 |
| RAD-57text | 77950587 | 5 | 2 / 2 |
| RAD-67text | 87112038 | 4 | 2 / 1 |
| IRIS GATEWAYtext | 86588462 | 4 | 4 / 0 |
| IRIStext | 85673890 | 4 | 4 / 0 |
| RAD-97text | 86758301 | 4 | 2 / 1 |
| RAD-Gtext | 87345900 | 4 | 2 / 1 |
| RAD-6text | 88927339 | 3 | 1 / 1 |
| (design-only mark) | 90053023 | 3 | 3 / 0 |
| BRIDGE AURICULAR STIMULATOR | 86902033 | 2 | 1 / 0 |
| RAINBOWtext | 78424954 | 2 | 1 / 0 |
| RAINBOW RESPOSABLEtext | 77869629 | 2 | 0 / 0 |
| RAINBOW ACOUSTIC MONITORINGtext | 85047101 | 2 | 1 / 0 |
| RAINBOW 4Dtext | 85041477 | 2 | 0 / 0 |
| ORI | 98083716 | 2 | 1 / 0 |
| RAD-9text | 90244674 | 2 | 0 / 1 |
| BRIDGEtext | 86901992 | 2 | 1 / 0 |
| MASIMOtext | 74323652 | 2 | 2 / 0 |
| MASIMOtext | 74442460 | 2 | 2 / 0 |
| MASIMO OPEN CONNECTtext | 85918075 | 2 | 2 / 0 |
| MASIMO SAFETYNETtext | 88459429 | 2 | 2 / 0 |
| MASIMO SAFETYNETtext | 88779598 | 2 | 2 / 0 |
| SET-4text | 87950760 | 1 | 1 / 0 |
| SET 4text | 87941980 | 1 | 1 / 0 |
| RAD-6text | 87112024 | 1 | 1 / 0 |
| ADAPTIVE THRESHOLD ALARMtext | 85047115 | 1 | 0 / 0 |
| RAD-GCtext | 88709668 | 1 | 1 / 0 |
| MASIMO FREEDOMtext | 97188207 | 1 | 0 / 0 |
| RAD-9text | 78288833 | 1 | 0 / 1 |
| RAD-87text | 77953068 | 1 | 0 / 1 |
| RAD-9text | 87143621 | 1 | 1 / 0 |
| ACCURATE MONITORING WHEN YOU NEED IT MOSTtext | 76169984 | 1 | 0 / 0 |
| MASIMO SEMICONDUCTORtext | 85619262 | 1 | 1 / 0 |
| MASIMO ANIMAL HEALTHtext | 85773184 | 1 | 1 / 0 |
| ROOT SQUAREDtext | 88769137 | 1 | 0 / 0 |
| ROOT 2 | 88879826 | 1 | 0 / 0 |
| MASIMOtext | 90053030 | 1 | 1 / 0 |
| MASIMO SLEEPtext | 90081639 | 1 | 1 / 0 |
| PULSE CO-OXIMETERtext | 77011021 | 1 | 0 / 0 |
| SQUARE ROOTtext | 88937090 | 1 | 0 / 0 |
| PULSE CO-OXIMETERtext | 78558331 | 1 | 0 / 0 |
From public USPTO records. A mark is listed when it appears as a senior asserted mark in TTAB or federal-court proceedings on file. Serial links open the USPTO TSDR record.
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Data sources: publicly published USPTO Trademark Trial and Appeal Board proceedings (1951–2026, with possible gaps before electronic filing) and U.S. federal court dockets (PACER/CourtListener, nature-of-suit codes 840 and 820). Figures reflect filings on record and do not characterize the merits, validity, or legitimacy of any individual action by Masimo Corporation. Trademark holders have legal rights — and in some doctrines, an obligation — to enforce registered marks. This page does not provide legal advice; consult licensed counsel for case-specific questions. See the full leaderboard.