US 8868772

An analysis of United States Patent 8,868,772 reveals a foundational technology in the field of adaptive bitrate streaming, which has been the subject of multiple patent infringement lawsuits.

Title: Apparatus, system, and method for adaptive-rate shifting of streaming content

Assignee: The current assignee of the patent is DISH Technologies LLC. The original assignee was EchoStar Technologies LLC. The patent was also previously assigned to Move Networks, Inc.

Inventors: The inventors listed on the patent are R. Drew Major and Mark B. Hurst.

Filing Date: The application for this patent was filed on April 28, 2005. It claims the benefit of a provisional application filed on April 30, 2004.

Issue Date: The patent was granted on October 21, 2014.

Abstract: The patent describes a method and system for adaptive-rate shifting of streaming content. This involves a client-side "agent controller module" that simultaneously requests multiple small portions of a video stream, referred to as "streamlets." This module continuously monitors the requests and their responses to determine network conditions and accordingly requests higher or lower quality streamlets. A "staging module" then assembles these streamlets for playback. The system also involves a content server that processes the original content into multiple streams of varying quality. The abstract also mentions a method that includes these steps of requesting, monitoring, and staging the streamlets for playback.

Plain-Language Overview of Independent Claims

US Patent 8,868,772 has one independent claim, which is Claim 1. Here is a plain-language explanation:

Claim 1: This claim outlines a method for a media player on a user's device to stream video. The core of the invention is the player's ability to:

• Simultaneously request multiple small pieces ("streamlets") of a video from a server.
• Continuously monitor how quickly these streamlets are being received.
• Based on this monitoring, decide whether to request higher or lower quality versions of the upcoming streamlets to adapt to the current network conditions.
• Assemble these received streamlets in the correct order for smooth playback.

In essence, the patent's key innovation is a client-side (viewer's device) intelligence that actively manages the quality of the video stream in real-time to prevent buffering and optimize the viewing experience based on the available internet bandwidth.

Litigation History

US Patent 8,868,772 has been asserted in several patent infringement lawsuits by its owner, DISH Technologies LLC, and its subsidiary, Sling TV LLC. These lawsuits target companies in the streaming media industry, alleging that their services utilize the adaptive bitrate streaming technology covered by this and other related patents.

Notable litigation includes:

• DISH Technologies LLC et al v. fuboTV Inc.: Filed in the US District Court for the District of Delaware, this lawsuit alleges that fuboTV's streaming service infringes on eight of DISH's patents related to multi-bitrate content streaming, with US Patent 8,868,772 being one of the key patents cited. DISH claims that they attempted to negotiate a licensing agreement with fuboTV for four years before filing the suit.
• DISH Technologies LLC et al v. A Parent Media Co. Inc. et al: This case, also filed in the Delaware District Court, involved the same set of eight streaming technology patents. The lawsuit was voluntarily dismissed by DISH and Sling TV after 234 days of litigation. The reasons for the dismissal were not made public.
• DISH Technologies LLC et al v. BritBox LLC: This lawsuit was filed in the US District Court for the Southern District of New York, alleging that the BritBox streaming service infringes on DISH's adaptive streaming patents.

These cases highlight a broader strategy by DISH Technologies to enforce its patent portfolio covering adaptive bitrate streaming, a technology fundamental to modern over-the-top (OTT) video delivery. The technology described in US Patent 8,868,772, which originates from the portfolio of Move Networks (acquired by an EchoStar subsidiary and now owned by DISH), is central to these legal actions.