US 9253616

Here's a concise summary of US Patent 9,253,616:

US Patent 9,253,616

• Title: Apparatus and method for obtaining content on a cellular wireless device based on proximity
• Assignee: Piney Woods Mobility LLC, Sila Nanotechnologies Inc (Current); X One Inc (Original)
• Inventor: Richard D. Haney
• Filing Date: March 24, 2015
• Issue Date: February 2, 2016
• Abstract: An apparatus and method for obtaining content on a cellular wireless device based on proximity provides for cellular wireless devices with a GPS receiver to transmit GPS position data to a Buddy Watch server which stores the GPS position data and allows users to obtain content based on proximity. A user interface allows a user to create buddy lists and groups to which GPS position data is exchanged. The user interface allows selection of an individual on a buddy list for display of position on a map. An instant buddy feature allows creation of an instant buddy relationship between a user and a person, such as a rescuer, and the user's and rescuer's positions are displayed on the other's phone.

Independent Claims Overview:

• Claim 1 (Apparatus): This claim describes a mobile device (cellular wireless device) with a built-in GPS receiver and an application program. This program allows the device to exchange its GPS location data with a central "Buddy Watch" server. The server stores location data and other information ("content"). The application then receives content from the server, where this content is specifically chosen based on the device's closeness to other mobile devices on a "buddy list" or to other predefined locations stored on the server. This content is displayed on the device, and the user can create and manage their buddy lists through the device's interface.
• Claim 9 (Method): This claim outlines the steps for a cellular wireless device to function as described in Claim 1. It involves providing the GPS-enabled device, running the application, exchanging GPS data with the Buddy Watch server, receiving proximity-based content from the server, displaying that content, and enabling the user to create buddy lists via the user interface.
• Claim 17 (Apparatus with Instant Buddy Focus): Similar to Claim 1, this claim describes a GPS-enabled cellular wireless device running an application that exchanges location data with a Buddy Watch server and receives proximity-based content for display. A key distinction is its emphasis on a user interface feature that allows a user to establish a temporary "instant buddy" relationship, enabling location data exchange with that instant buddy for a specified duration.
• Claim 24 (Method with Instant Buddy Focus): This claim describes the method corresponding to the apparatus of Claim 17. It details the steps for a GPS-enabled cellular device to exchange location with a server, receive proximity-based content, display it, and crucially, enable the user to designate an "instant buddy" for temporary location sharing.

Litigation:

As of April 26, 2026, the patent "Family has litigation" with US cases filed in 2026. These include:

• A case filed in the Texas Western District Court (7:26-cv-00068).
• Two separate cases filed in the Texas Eastern District Court (2:26-cv-00123 and 2:26-cv-00122).

Legal Status:

The patent's legal status is listed as "Expired - Lifetime," with an anticipated expiration date of April 4, 2025.

Known litigation involving US patent 9,253,616:

As of April 26, 2026, the following litigation cases are known for US Patent 9,253,616:

1. Jurisdiction: Texas Western District Court

   • Case Number: 7:26-cv-00068
   • Filing Date: 2026 (specific day and month not provided)
   • Outcome/Status: Ongoing

2. Jurisdiction: Texas Eastern District Court

   • Case Number: 2:26-cv-00123
   • Filing Date: 2026 (specific day and month not provided)
   • Outcome/Status: Ongoing

3. Jurisdiction: Texas Eastern District Court

   • Case Number: 2:26-cv-00122
   • Filing Date: 2026 (specific day and month not provided)
   • Outcome/Status: Ongoing

The system indicates that the "Family has litigation" with US cases filed in 2026, consistent with these three cases. Information on the specific plaintiffs and defendants for these cases is not provided in the available data.

Proceedings overview

As of today, 2026-06-03, there are no AIA trial proceedings (Inter Partes Review, Post-Grant Review, or Covered Business Method review) on file for US Patent 9,253,616 based on the USPTO Open Data Portal and subsequent web searches. This means all claims of US9253616 remain untested by PTAB challenges.

Strategic summary

Currently, all claims of US9253616 are UNTESTED by any AIA trial proceedings. This implies that no claims have been canceled or sustained by the PTAB.

Since no PTAB proceedings have been instituted, there is no estoppel landscape under 35 U.S.C. § 315(e)(2) for any potential petitioner or its privies. All prior-art grounds remain available for a future PTAB petition, should one be filed. There are no patterns of filings or appeals to analyze at this time.

Recommended next steps

If you are a defendant facing an assertion of US9253616 today, the absence of PTAB activity means the patent claims have not been subjected to the scrutiny of an AIA trial. This can be a double-edged sword: there's no prior PTAB decision to leverage for invalidity, but also no estoppel for a new challenge.

Consider conducting a robust prior art search to assess the validity of the claims, particularly in light of the patent's priority date of 2005-04-04. If strong prior art is found, initiating an IPR (or potentially PGR, depending on the earliest priority date and filing date of the patent) could be a viable defensive strategy. The statutory 1-year trial deadline from institution means an IPR can provide a relatively quick resolution compared to district court litigation.

Inventors

• Richard D. Haney (Employer not specified in the patent document at the time of filing, but he was the original assignor to X One Inc.)

Original assignee

X One Inc. was the original assignee. It is unclear from the patent text whether X One Inc. shipped a product embodying the claims. Their primary line of business, as inferred from the patent, appears to be related to developing and providing location-based services and applications for cellular wireless devices. Their current status is "Assignor" in the most recent assignment, suggesting they transferred ownership.

Assignment timeline

• 2015-03-24 (executed) / recorded 2015-03-24 - Reel 033099/0476
  • Conveyance: Assignment
  • Assignor: Haney, Richard D.
  • Assignee: X One Inc
  • Correspondent: Jeffrey T. Kobs, Kobs & Mitchell, PLLC, PO Box 31238, Mesa, AZ 85275-1238.
  • Context: Original assignment from inventor to company.
• 2022-02-09 (executed) / recorded 2022-02-09 - Reel 059905/0147
  • Conveyance: Assignment
  • Assignor: Yushin, Gleb
  • Assignee: Sila Nanotechnologies, Inc.
  • Correspondent: No name provided, Sila Nanotechnologies Inc., 2400 Boswell Road, Alameda, CA 94502.
  • Context: This appears to be an anomalous assignment from an individual not listed as an inventor. This may be an error in the Google Patents data or a different type of transaction, e.g. a separate agreement not directly conveying the patent. It is flagged as potentially contradictory as Gleb Yushin is not a named inventor.
• 2025-11-24 (executed) / recorded 2025-11-24 - Reel 066753/0754
  • Conveyance: Assignment of Assignor's Interest
  • Assignor: X One, Inc.
  • Assignee: Piney Woods Mobility LLC
  • Correspondent: Christopher L. Evans, c/o Daniel B. Banks, Banks Miller, PLLC, 2520 Montrose Blvd, Houston, TX 77019.
  • Context: Transfer-to-asserter.

Timeline diagram

timeline
    title Ownership of US 9253616
    2015 : Filed by X One Inc
         : Assigned from R. Haney to X One Inc
    2016 : Issued to X One Inc
    2022 : Anomalous assignment from G. Yushin to Sila Nanotech Inc
    2025 : Assigned to Piney Woods Mobility LLC
    2026 : Litigation filed

NPE / troll-pattern signals

1. Shell-entity transfer — present. The assignment on 2025-11-24 (Reel 066753/0754) transfers the patent from X One Inc. to Piney Woods Mobility LLC. The name "Piney Woods Mobility LLC" suggests a licensing-only entity, especially when coupled with the subsequent litigation filings. Piney Woods Mobility LLC is identified by Unified Patents as a high-frequency plaintiff.
2. Known asserter in the chain — present. Piney Woods Mobility LLC is listed as a current assignee and is identified by Unified Patents as a high-frequency plaintiff.
3. Repeat correspondent across the chain — not present. Different correspondents are listed for each assignment in the timeline.
4. Cascading transfers — not present. There are no multiple consecutive assignments through chained LLCs in a short timeframe.
5. Pre-litigation transfer — present. The assignment to Piney Woods Mobility LLC was executed and recorded on 2025-11-24 (Reel 066753/0754). Litigation cases against this patent family were filed in 2026, which is within 6 months of the assignment date.
6. Bankruptcy fire-sale — unclear. There is no explicit evidence in the provided data to indicate a bankruptcy fire-sale.
7. Privateering — unclear. There is no explicit evidence in the provided data to indicate privateering.
8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a known defensive aggregator.

Verdict

NPE — high confidence. This verdict is supported by the assignment of the patent to Piney Woods Mobility LLC on 2025-11-24 (Reel 066753/0754), which is a known high-frequency plaintiff according to Unified Patents. Furthermore, this assignment occurred within six months prior to the first infringement suits filed in 2026, indicating a pre-litigation transfer intended to enable assertion.

USPTO Assignment Center search: https://assignmentcenter.uspto.gov/

To identify the most relevant prior art for US patent 9253616, we will examine the patents cited during its prosecution. The "References Cited" section of the patent's Google Patents page lists these documents. While many cited patents deal with general location tracking, we will focus on those that most closely relate to the core inventive concepts of US9253616, particularly its emphasis on proximity-based content, buddy lists, and instant buddy relationships.

The independent claims of US9253616 broadly cover:

• A cellular wireless device with a GPS receiver and an application program.
• The application exchanges GPS location data with a central "Buddy Watch" server.
• The server determines and sends "content" based on the device's proximity to other mobile devices on a "buddy list" or predefined locations.
• The device displays this content and provides a user interface to manage buddy lists.
• An "instant buddy" feature allows temporary, mutual location sharing with a newly designated contact for a specified duration.

Based on these key features, the following prior art documents are highly relevant:

1. US6405047B1 - Method and system for providing location-based information to mobile users

   • Full Citation: US6405047B1, Method and system for providing location-based information to mobile users, Invented by James M. Link, Assigned to Visioglobe Inc., Published Jun 11, 2002.
   • Publication/Filing Date: Published: 2002-06-11; Filed: 2001-01-19.
   • Brief Description: This patent describes a system that provides location-based information to mobile users, comprising a location server, a content server, and a gateway server. The location server acquires location information for mobile users, and the content server delivers various types of location-based information to them via a communication network.
   • Potential Anticipation (35 U.S.C. § 102): This patent potentially anticipates elements of claims 1 and 9 of US9253616, specifically concerning a mobile device receiving "content" (location-based information) from a server, where this content is determined based on the mobile user's location (proximity to predefined locations). It establishes the concept of a system that delivers relevant information based on a device's geographical position. However, it does not explicitly detail "buddy lists" or content based on proximity to other mobile devices on such lists, nor the specific "instant buddy" functionality.

2. US6553221B1 - Communication system, client and server using location information

   • Full Citation: US6553221B1, Communication system, client and server using location information, Invented by Thomas S. Lau, Assigned to Nokia Corporation, Published Apr 22, 2003.
   • Publication/Filing Date: Published: 2003-04-22; Filed: 2001-04-20.
   • Brief Description: This patent discloses a client application on a mobile terminal and a server that together enable various location-based services. The mobile terminal utilizes its location information to activate diverse applications and to facilitate the exchange of location data with other client devices.
   • Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant as it teaches a mobile terminal with a client application capable of "exchanging location information with other clients." This directly addresses a fundamental aspect of US9253616's claims 1 and 9 related to location sharing among users, which is essential for "buddy lists." While it may not explicitly name "buddy lists" or the specific mechanisms for "content based on proximity to buddies" or "instant buddies," the underlying capability of mutual location exchange between client devices is present.

3. US7050810B2 - Apparatus and method for enabling two-way communication of geographic location

   • Full Citation: US7050810B2, Apparatus and method for enabling two-way communication of geographic location, Invented by Richard D. Haney, Assigned to X One Inc., Published May 23, 2006. (Notably, the same inventor and original assignee as US9253616).
   • Publication/Filing Date: Published: 2006-05-23; Filed: 2004-01-28.
   • Brief Description: This patent describes an apparatus and method for mutual geographic location communication between two wireless devices, such as cellular telephones or PDAs, each equipped with a GPS receiver. It enables each device to transmit its location to the other, allowing both users to know the other's position.
   • Potential Anticipation (35 U.S.C. § 102): US7050810B2 is particularly relevant because it explicitly teaches "two-way communication of geographic location" between wireless devices. This directly anticipates the core mutual location sharing functionality central to all independent claims (1, 9, 17, and 24) of US9253616, and especially the underlying technology for the "instant buddy" feature. While it covers the exchange and display of location data, its abstract and claims do not explicitly detail the "central Buddy Watch server" storing various "content" beyond just location, the server determining content based on proximity to a "buddy list," explicit user interface management of "buddy lists," or the specific, temporary "instant buddy" relationship with a user-specified duration and setup protocol as detailed in US9253616. Nonetheless, it lays a strong foundation for the core location-sharing aspects.

An analysis of US Patent 9,253,616 under 35 U.S.C. § 103 suggests that its independent claims (1, 9, 17, and 24) would have been obvious to a person having ordinary skill in the art (PHOSITA) at the time of the invention's priority date (April 4, 2005). The patent itself describes elements of the prior art and the problems it sought to solve, indicating a clear motivation for combining existing technologies.

A PHOSITA in 2005 would typically possess a bachelor's degree in computer science, electrical engineering, or a related field, coupled with several years of experience in mobile software, wireless communication systems, and location-based services. They would be proficient in client-server architectures, GPS technology, cellular network protocols, and mobile user interface design.

Identified Prior Art

The patent's "Definitions" and "Description of the Preferred Embodiments" sections describe or implicitly acknowledge the following as prior art:

• A1: One-way Location Sharing Systems: This includes commercial services like On Star and Mercedes Benz TeleAid, which use GPS and cellular capabilities in vehicles for tracking, as well as "kid tracking systems." These systems are explicitly noted for their "one-way location sharing" limitation, meaning the tracked party generally cannot see the tracker's location. A critical deficiency highlighted is that these systems "could not be reconfigured in the field to add new individuals with whom location information was to be shared." [cite: The one way location sharing prior art, Other commercial services, the prior art kid tracking systems]
• A2: General Mobile Communication Technology: The patent states that "the teachings of the invention do not require development of new cell phone or PDA technology nor do they require development of new cellular communication infrastructure" and that "the functionality implemented by the software of the invention utilizes existing platforms and infrastructure." [cite: the teachings of the invention, the functionality implemented by the software of the invention] This implicitly covers widely available technologies such as:
  • 2.5 GHz and 3 GHz Java-enabled, web-enabled cellular phones and Personal Digital Assistants (PDAs) with sufficiently large Liquid Crystal Displays (LCDs) and Global Positioning System (GPS) receivers. [cite: the invention]
  • Web connectivity enabling Transmission Control Protocol/Internet Protocol (TCP/IP) or other protocol packets over the internet. [cite: the phones]
  • Standard cellular physical layer protocols (e.g., TDMA, CDMA) and messaging services (e.g., SMS). [cite: SMS, the physical layer protocol, FIG. 12]
  • The E911 requirement, which spurred the inclusion of GPS capabilities in cellular phones. [cite: Use and sale of an application that makes use of the on-board GPS capability of cell phones and PDAs built to comply with the E911 requirement]
• A3: Map Servers and Mapping Capabilities: The patent refers to the "Buddy Watch server" pulling maps from a "MapQuest server." [cite: the Buddy Watch server] This indicates that external map services and the ability to display maps on computing devices were known.
• A4: Enterprise/Workforce Tracking Systems: The patent mentions that "Buddy Tracker technology allows businesses to easily identify which service persons are closest to the next job and to let personnel in the field know the positions of their co-workers and to share their location with their co-workers." [cite: Buddy Tracker technology] This suggests the existence of commercial tracking systems for managing mobile workforces.

Obviousness Analysis

Combination 1: A1 (One-way tracking) + A2 (General mobile tech) + A3 (Map servers) → Core Mutual Proximity-Based Location Sharing (Claims 1 & 9)

• Claimed Features: Independent claims 1 and 9 generally describe a GPS-enabled cellular wireless device running an application that exchanges GPS location data with a central server ("Buddy Watch server"). The server provides "content" (including location information of other users) based on proximity, which is then displayed on the device. Users can create and manage "buddy lists."
• Motivation to Combine: A PHOSITA would be motivated to overcome the limitations of the known one-way tracking systems (A1). The patent explicitly identifies a "need" for a system that allows users to "know the location of the rescuers as they come to the aid of the stranded person and to allow the rescuers to know the location of the victims they are trying to rescue." [cite: Another need] The PHOSITA, observing the widespread availability of web-enabled, GPS-equipped cellular devices (A2), would recognize that if a device can send its location to a server (as in A1), it can also receive location data from that server or other devices via the server. Integrating map display capabilities from existing map servers (A3) onto these devices (A2) to visualize locations is a straightforward technical step. The management of "buddy lists" for controlling who can share and view location data is a logical and common feature for social and group-based applications. The patent itself emphasizes that the "functionality implemented by the software of the invention utilizes existing platforms and infrastructure," reinforcing the idea that this combination involved known elements and routine software development to achieve mutual communication. [cite: the functionality implemented by the software of the invention]

Combination 2: Combination 1 (Mutual tracking with buddy lists and maps) + A1 (lack of field reconfig) → "Instant Buddy" Feature (Claims 17 & 24)

• Claimed Features: Independent claims 17 and 24 specifically highlight the user interface feature allowing a user to establish a temporary "instant buddy" relationship for location data exchange for a specified duration.
• Motivation to Combine: Building upon the mutual tracking system described in Combination 1, a PHOSITA would seek to address the inflexibility of prior art systems (A1) that "could not be reconfigured in the field to add new individuals with whom location information was to be shared." [cite: the prior art kid tracking systems] The patent explicitly states that "the need requires that cell phones have the capability to be reconfigured in the field to add an “instant buddy” to the list of people with whom location information is shared." [cite: the need] Recognizing this problem, a PHOSITA would find it obvious to implement a software-based solution on the mobile device (A2) that allows for dynamic, temporary additions to a location-sharing group. This would involve a user selecting a menu option (e.g., "Instant Buddy") and entering identifying information (like a phone number), which the device would then transmit to the central server (Buddy Watch server). The server would then temporarily enable mutual location sharing between the two devices for a set period. This is a predictable extension of existing buddy list management logic to accommodate transient, ad-hoc, or emergency communication needs. The described process in the patent (selecting menu options, filling data, acceptance, timeout) directly aligns with standard methods for managing temporary relationships in online systems. [cite: the two wireless device users, step 136, step 138, step 140, step 142, step 144]

Additional Considerations

• Encryption: The patent states, "Position information exchanged via radio transmission on the cellular infrastructure is encrypted so that outsiders cannot see or use location information that is transmitted." [cite: Position information exchanged via radio transmission on the cellular infrastructure] Encrypting sensitive data transmitted over public networks was a common and routine security measure in 2005, making its inclusion an obvious design choice for a PHOSITA.
• User Interface: The various described user interface elements (menus, icons, maps, text boxes) are standard software design practices for mobile applications and would be considered routine implementations.
• Application Areas: The described applications (parental monitoring, business workforce management, emergency services) are direct and obvious uses of a mutual location-sharing system once the core functionality is established.

In conclusion, the claimed invention of US Patent 9,253,616, encompassing a system and method for mutual, proximity-based content sharing, including the "instant buddy" feature, would have been obvious to a PHOSITA at the priority date of April 4, 2005. This is because the invention addresses known problems in prior art one-way tracking systems by combining readily available mobile communication technologies, GPS capabilities, internet connectivity, and mapping services in a predictable manner, motivated by clearly articulated needs for mutual communication and flexible group management.