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ARTICLE · 13 OCTOBER 2026

D. Mass. Patent Litigation Update: August 2026

Finnegan, Henderson, Farabow, Garrett & Dunner LLP
Finnegan, Henderson, Farabow, Garrett & Dunner LLP
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Recent patent litigation orders from the United States District Court for the District of Massachusetts reveal critical claim construction disputes and discovery rulings that shape the boundaries of patent enforcement. How do courts balance claim definiteness requirements with the practical realities of patent scope, and what standards govern third-party discovery in indirect infringement cases?

United StatesIntellectual Property

This is part of a series of articles discussing recent orders of interest issued in patent cases by the United States District Court for the District of Massachusetts.


In Omni Continuum LLC v. NKT Photonics Inc., et al., No. 1:24-cv-11007-IT, Judge Talwani issued a claim construction order for a patent directed to a Raman-effect light source capable of shifting between wavelengths. Four of the disputed terms are discussed as follows:

1. “infrared light source”

Omni’s Proposal

NKTP’s Proposal
add to NKTP’s proposal “this is a preamble term that does not exclude emitting other wavelengths of light” to NKTP’s construction a source of light that emits light with a wavelength between approximately 750 nm and 1 mm

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