Data Fence LLC filed Data Fence LLC v. CSC Holdings, LLC, No. 1:26-cv-01150 (D. Del.), on September 14, 2026. Data Fence is a New Mexico patent owner; CSC Holdings is a Delaware cable and phone company associated with Optimum service.
Patents and accused products
The complaint asserts U.S. Patent 9,491,286 ("Methods and systems for inbound call control"), issued November 8, 2016. The claim chart identifies at least claim 1 and maps it to Optimum Home Phone's robocall / spam-call protection features. Data Fence seeks damages for alleged direct and induced infringement.
What the patents cover
U.S. Patent 9,491,286, claim 1. The complaint chart quotes a method in which a call-control unit receives a call between the service provider and the telephone and queries a server for information about the number and caller. If additional information exists, the method determines whether it indicates a negative characteristic of the caller or number and, if so, performs a first operation on the call. It otherwise performs a second operation in response to the absence of that information. The chart maps this sequence to Optimum Home Phone's call-blocking features; that is Data Fence's allegation.
What the lawsuit is about
Data Fence says Optimum Home Phone's stop-robocall / spam-blocking path is the accused instrumentality: unwanted calls hit a call-control function before they reach the subscriber handset. The suit is about inbound call filtering on a cable phone product.
What it means
This is a Delaware telecom feature suit over home-phone robocall blocking.
What to watch next
Watch for CSC Holdings' answer or early motions, and for whether Data Fence asserts the same patent against other cable or VoIP providers.