---
schema_version: "secwatch.filing_event.v1"
accession: "0000937556-23-000205"
form_type: "8-K"
ticker: "MASI"
cik: "0000937556"
company_name: "MASIMO CORP"
filed_at: "2023-10-27T23:59:59+00:00"
generated_at: "2026-06-09T07:34:04.666372+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# USITC issues limited exclusion order against Apple Watches for infringing Masimo pulse oximetry patents

## Summary
- ITC found Apple violated Section 337; claims 22 & 28 of '502 patent and claims 12, 24, 30 of '648 patent infringed.
- Limited exclusion order and cease & desist order issued, effective after 60-day Presidential review period.
- Masimo CEO Joe Kiani: 'Even the world's largest company is not above the law.'
- Public interest comments from academics, physicians, and Congress supported the exclusion order.
- Remedy exempts service/repair and warranty replacements of products purchased before review period.

## SEC filing metadata
- accession: 0000937556-23-000205
- form_type: 8-K
- ticker: MASI
- cik: 0000937556
- company_name: MASIMO CORP
- filed_at: 2023-10-27T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/937556/000093755623000205/0000937556-23-000205-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/937556/000093755623000205/masi-20231026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000937556-23-000205
- JSON: https://secwatch.observer/filing/0000937556-23-000205.json
- Plain text: https://secwatch.observer/filing/0000937556-23-000205.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.