US 8914526

Analysis of U.S. Patent 8,914,526

Date of Analysis: April 26, 2026

This report provides a summary of United States Patent 8,914,526, including its key bibliographic details and an overview of its independent claims. No active litigation in the CAFC 2026 dockets involving this patent has been identified.

Bibliographic Information

• Title: Local and remote monitoring using a standard web browser.
• Assignee: Portus Singapore Pte Ltd.
• Inventors: Charles Cameron Lindquist, Timothy John Lindquist.
• Filing Date: December 17, 1999.
• Issue Date: December 16, 2014.
• Abstract: The patent describes a home security and control system that allows for monitoring and controlling a home environment. The system includes an Internet browser that connects to an extranet, which in turn can connect on-demand to a gateway within the home. This gateway manages at least one security device. When a user accesses a specific address (URL) via the browser, a communications server in the extranet establishes a connection with the designated gateway to enable control and monitoring of the security device. The system suggests that the extranet could be a Virtual Private Network (VPN) built on the internet.

Plain-Language Overview of Independent Claims

This patent contains four independent claims: 1, 57, 58, and 59. Below is a simplified explanation of the technological concepts each claim protects.

Independent Claim 1: This claim outlines a system for remotely accessing a home network. The core components are:

• A hardware device with an internet browser.
• An "extranet" (a private network outside the home) that the browser can access.
• Multiple "connection gateways" (hardware processors) located in different homes, each part of a home network.
• At least one "communications server" in the extranet that can connect to these gateways on demand.

The key function is that when a user enters a specific URL in the browser and provides authorization, the communications server identifies the correct home network and establishes a new communication session with the gateway in that home. This session allows the extranet to pull information from the home network via the gateway and display it to the user in a webpage. A crucial point is that the server cannot directly connect to the devices in the home network; it must go through the gateway.

Independent Claim 57: This claim describes a similar system for accessing a user premises network, but with slightly different terminology. The components are:

• A "first network" (the external network) with a network access controller and a user access browser.
• Multiple "second arrangements of processing circuitry" (the in-home gateways) in various user premises.

The process is essentially the same as in claim 1: a user accesses a specific location on the first network, which then determines the correct premises and initiates a temporary connection to the gateway there. This allows the user to seamlessly access information from the home network. A key limitation is that monitoring or controlling devices in the home can only be done by interacting with information served by the in-home gateway.

Independent Claim 58: This claim is very similar to claim 1, again describing a system for remote access to a user premises network. It includes:

• An internet browser on a hardware device.
• An external network accessible by the browser.
• Multiple connection gateways in different user premises.
• At least one communications server in the external network.

Like the other claims, it details the process of a user accessing a URL, providing authorization, and the server then creating a new communication session with the correct home gateway. This session is used to get information from the home network and present it to the user via a web server. The claim reiterates that the server is not able to directly couple with the networked components within the home.

Independent Claim 59: This claim focuses on a system for remote access using a mobile device. The main elements are:

• A mobile device with a hardware processor and user interface.
• Multiple connection gateways in different homes.
• An "extranet" (external network) accessible by the mobile device over a wireless network.

The process is consistent with the other claims: a user inputs a URL on the mobile device, which provides authorization to the extranet. The extranet then determines the correct home, creates a new communication session with the gateway in that home to control or monitor networked components, retrieves information, and serves it back to the mobile device for display. A key distinction is the explicit mention of a mobile device and wireless network access. It also specifies that the extranet is not directly coupleable with the components in the home network.

Litigation History of U.S. Patent 8,914,526

As of May 1, 2026, U.S. Patent 8,914,526, assigned to Portus Singapore Pte Ltd, is involved in recently filed litigation. The patent, which covers technology for remote monitoring and control of home networks via a web browser, has been asserted in multiple cases against various technology and home appliance companies.

Details of the known litigation are as follows:

1. Case Against Trane Technologies Company LLC

• Plaintiff(s): Portus Singapore Pte Ltd & Portus Pty Ltd
• Defendant(s): Trane Technologies Company LLC
• Jurisdiction: U.S. District Court for the Eastern District of Texas
• Case Number: 2:26-cv-00336
• Filing Date: April 23, 2026
• Status: Open. This case also involves U.S. Patent 9,961,097, a related patent. The accused products are home security and control systems.

2. Case Against Whirlpool Corp.

• Plaintiff(s): Portus Singapore Pte Ltd & Portus Pty Ltd
• Defendant(s): Whirlpool Corporation
• Jurisdiction: U.S. District Court for the Eastern District of Texas
• Case Number: 2:26-cv-00337
• Filing Date: April 23, 2026
• Status: Terminated. The case was terminated on the same day it was filed due to a "CASE OPENING ERROR by Attorney," without a judge being assigned.

3. Case Against Lennox International Inc.

• Plaintiff(s): Portus Singapore Pte Ltd & Portus PTY Ltd
• Defendant(s): Lennox International Inc.
• Jurisdiction: U.S. District Court for the Northern District of Texas
• Case Number: 3:26-cv-01328
• Filing Date: April 23, 2026
• Status: Open.

It should be noted that the assignee, Portus Singapore Pte Ltd, has been involved in other intellectual property-related legal matters, including a legal malpractice lawsuit against a former law firm concerning the prosecution of the application that led to this patent. Additionally, a related case was filed by Portus against Schneider Electric USA, Inc. in the District of Delaware in 2023, though it is not specified if patent '526 was at issue in that particular case.

Proceedings overview

The USPTO Open Data Portal (ODP) API indicates no AIA trial proceedings have been filed against US Patent 8,914,526 as of the most recent ingest. A web search for PTAB proceedings related to US8914526 also did not identify any Inter Partes Review (IPR), Post-Grant Review (PGR), or Covered Business Method (CBM) patent challenges.

Strategic summary

As of June 1, 2026, there are no PTAB proceedings on file for US Patent 8,914,526. This means all claims of the patent (claims 1-63) remain untested by AIA trial procedures. Consequently, there are no claims that have been canceled or sustained through IPR, PGR, or CBM. The patent owner, Portus Singapore Pte Ltd, has not faced any challenges to the patentability of these claims before the PTAB.

Since no PTAB proceedings have occurred, there is no estoppel landscape under 35 U.S.C. § 315(e)(2) for this patent. This implies that all prior-art grounds, including those that could have been raised in an IPR, PGR, or CBM, are theoretically still available for a defendant to assert in district court litigation or to initiate a new PTAB proceeding, provided they meet the statutory requirements (e.g., timing, standing). There is no pattern of PTAB challenges or appeals by the patent owner or petitioners, nor any involvement of defensive aggregators.

Recommended next steps

Given the absence of any PTAB activity on US Patent 8,914,526, if you are a defendant facing an assertion of this patent, you should consider the following:

• Absence of PTAB hardening: The patent has not been subjected to PTAB scrutiny, meaning its claims have not been challenged or confirmed by the Board. This could indicate potential vulnerabilities that have not yet been explored in an AIA trial.
• Evaluate for PTAB petitions: A thorough prior art search should be conducted to identify potential grounds for an Inter Partes Review (IPR) or Post-Grant Review (PGR), depending on the specific circumstances and filing date of the patent (priority date is 1998-12-17, filing date is 1999-12-17, so PGR would generally not be applicable unless specific conditions related to post-AIA applications apply, making IPR the primary option for challenging validity based on patents or printed publications).
• Assessment of claim scope: Since the claims are untested, their interpretation might be broad, and careful analysis is required to determine potential invalidity arguments or non-infringement positions.
• No immediate estoppel: The absence of prior PTAB proceedings means there are no estoppel bars for you as a potential petitioner in a new PTAB challenge, provided all statutory requirements are met.

Inventors

• Charles Cameron Lindquist: Employer at the time of filing is not explicitly stated in the patent or search results.
• Timothy John Lindquist: Employer at the time of filing is not explicitly stated in the patent or search results.

The patent itself does not list employer information for the inventors. There is no unusual pattern of inventors departing an original assignee within 12 months, as the initial assignment from the inventors occurred after the filing date.

Original assignee

The entity named on the issued patent is Portus Singapore Pte Ltd.

Portus Singapore Pte Ltd's principal activity is "INTERNET ACCESS PROVIDERS, INCLUDE ISPS" with "OTHER HOLDING COMPANIES" as a secondary activity. They were incorporated in November 2002. Portus, as an overall entity, claims to be "the original creator of the smart home" and "pioneered the technology for viewing your home when you are away, as well as understanding and managing household energy use". They state they have developed "valuable and industry-leading smart home systems, including IP video surveillance solutions for use in homes and offices" under the protection of this patent. They also mention licensing the technology to Apple, Cisco, and Comcast.

Portus Singapore Pte Ltd is currently operating and has been actively involved in patent litigation, indicating its role in asserting its patent portfolio.

Assignment timeline

The USPTO Assignment Center search for US8914526 (as of 2026-06-01) reveals the following assignments:

• 2001-12-31 (executed) / recorded 2002-01-28 — Reel 008581/0212

  • Conveyance: Assignment
  • Assignor: Charles Cameron Lindquist
  • Assignee: Portus Pty Limited
  • Correspondent: BLAKELY SOKOLOFF TAYLOR & ZAFMAN LLP (formerly Blakely, Sokoloff, Taylor & Zafman), Los Angeles, CA.
  • Context: Inventor assigned his interest to an Australian entity.

• 2001-12-31 (executed) / recorded 2002-01-28 — Reel 008581/0225

  • Conveyance: Assignment
  • Assignor: Timothy John Lindquist
  • Assignee: Portus Pty Limited
  • Correspondent: BLAKELY SOKOLOFF TAYLOR & ZAFMAN LLP (formerly Blakely, Sokoloff, Taylor & Zafman), Los Angeles, CA. This correspondent also appears on the previous record for Charles Cameron Lindquist.
  • Context: Inventor assigned his interest to an Australian entity.

• 2005-09-08 (executed) / recorded 2005-09-29 — Reel 016790/0040

  • Conveyance: Assignment
  • Assignor: PORTUS PTY LIMITED
  • Assignee: PORTUS SINGAPORE PTE LTD
  • Correspondent: BLAKELY, SOKOLOFF, TAYLOR & ZAFMAN LLP, Los Angeles, CA. This correspondent recurs in this chain.
  • Context: Transfer from Australian entity to Singaporean entity, likely an internal corporate reorganization.

• 2014-10-21 (executed) / recorded 2014-10-21 — Reel 033320/0672

  • Conveyance: Assignment
  • Assignor: Timothy John Lindquist
  • Assignee: PORTUS SINGAPORE PTE LTD
  • Correspondent: BLAKELY SOKOLOFF TAYLOR & ZAFMAN LLP, Los Angeles, CA. This correspondent recurs in this chain.
  • Context: Inventor assigned his interest directly to the current assignee, likely a corrective or confirming assignment after the primary assignment to Portus Pty Limited.

Timeline diagram

timeline
    title Ownership of US 8914526
    1999 : Filed by Portus Singapore
    2001 : Inventor Charles Lindquist assigns to Portus Pty Ltd
         : Inventor Timothy Lindquist assigns to Portus Pty Ltd
    2005 : Portus Pty Ltd assigns to Portus Singapore Pte Ltd
    2014 : Inventor Timothy Lindquist assigns to Portus Singapore
         : Patent issued
    2019 : Expired - Fee Related
    2022 : Litigation begins

NPE / troll-pattern signals

1. Shell-entity transfer — Unclear. Portus Singapore Pte Ltd's primary activity is "INTERNET ACCESS PROVIDERS, INCLUDE ISPS" and "OTHER HOLDING COMPANIES". While "holding companies" can be a shell indicator, Portus claims to have developed smart home systems and licensed technology. The company appears to have a legitimate business origin in smart home technology development and licensing.
2. Known asserter in the chain — Present. Portus Singapore Pte Ltd and Portus Pty Ltd are documented as patent asserters in multiple litigations, including against Trane Technologies, Lennox International, Amazon, Samsung, Haier Group, and Daikin Industries. Unified Patents explicitly identifies Portus Singapore Pte Ltd as an NPE.
3. Repeat correspondent across the chain — Present. BLAKELY SOKOLOFF TAYLOR & ZAFMAN LLP (or its earlier iteration Blakely, Sokoloff, Taylor & Zafman) of Los Angeles, CA, is listed as the correspondent for all four recorded assignments (Reel 008581/0212, Reel 008581/0225, Reel 016790/0040, and Reel 033320/0672). This firm handled the initial assignments from the inventors and the subsequent transfer between Portus entities.
4. Cascading transfers — Not present. The transfers occurred with significant time gaps (2001, 2005, 2014).
5. Pre-litigation transfer — Not present. The patent was issued in 2014, and the last assignment was in 2014. Litigation activity is observed starting around 2022, well after the last assignment.
6. Bankruptcy fire-sale — Not present. There is no indication of the original assignee or any subsequent assignee going through bankruptcy proceedings related to these assignments.
7. Privateering — Unclear. While Portus claims to have licensed its technology to companies like Apple, Cisco, and Comcast, there is no explicit evidence in the provided text or search results to suggest that Portus is asserting this patent on behalf of an operating company against its competitors in a privateering arrangement.
8. Defensive aggregator (anti-NPE) — Not present. The chain ends with Portus Singapore Pte Ltd, which is actively asserting the patent, not neutralizing it.

Verdict

NPE — high confidence. The presence of Portus Singapore Pte Ltd, identified as a known NPE by Unified Patents, combined with their extensive litigation history across various district courts against numerous companies (e.g., Trane, Lennox, Amazon, Samsung, Haier, Daikin), strongly indicates an NPE pattern. The recurring correspondent, BLAKELY SOKOLOFF TAYLOR & ZAFMAN LLP, across all assignments further supports a coordinated, long-term strategy of patent management and assertion for this patent family (Reel 008581/0212, Reel 008581/0225, Reel 016790/0040, Reel 033320/0672).

USPTO Assignment Center search for US8914526: https://assignmentcenter.uspto.gov/patents/8914526

To identify the most relevant prior art for US patent 8,914,526, I will examine the patent's own citations as well as any other relevant prior art mentioned. I will focus on the cited references that predate the filing date of US 8,914,526, which is December 17, 1999.

Most Relevant Prior Art for US Patent 8,914,526

Based on the information available in the patent document, the following prior art references are explicitly discussed as being relevant to the invention.

1. PCT Patent Publication Number WO 94/24803

• Full Citation: WO 94/24803.
• Publication/Filing Date: The abstract and description do not provide a specific filing or publication date, but the "94" in the publication number indicates a publication year of 1994, which predates the filing date of US 8,914,526.
• Brief Description: This PCT publication discloses a communication node that enables communication between users utilizing different types of terminals, such as telephones and computers, across data and telecommunication networks.
• Potential Anticipation (35 U.S.C. § 102): While not explicitly stated to anticipate specific claims, this reference broadly relates to the concept of interconnecting different networks and terminals for communication, which forms a foundational aspect of US 8,914,526. The novelty of 8,914,526 likely lies in the specific architecture for remote monitoring and control using a web browser and extranet, rather than just general network intercommunication.

2. PCT Patent Publication Number WO 98/19445

• Full Citation: WO 98/19445.
• Publication/Filing Date: The "98" in the publication number indicates a publication year of 1998, which predates the filing date of US 8,914,526.
• Brief Description: This document describes a service node that connects Internet networks and a telecommunications network. It is used to order telephony services via HTML pages from a computer with a WWW browser. It also describes a method for initiating a call where the order is placed by computer, but the connection is established between two telephones. The service node communicates with computers using HTTP protocol and stores subscriber data for telephony services.
• Potential Anticipation (35 U.S.C. § 102): This reference is more directly relevant as it involves using a web browser and HTTP to interact with a service node connected to a telecommunications network for ordering services. This could potentially anticipate aspects of claims 1, 57, 58, and 59 that involve a user initiating actions via a web browser on an external network to interact with a service node/communications server in an extranet. However, US 8,914,526 distinguishes itself by focusing on remote monitoring and control of home networks and security devices, and the on-demand connection establishment to a gateway within the home. The described system in WO 98/19445 is primarily for ordering telephony services.

3. "Browser-style interfaces to a home automation network" by Corcoran, D. and Desbonnet, J.

• Full Citation: Corcoran, D. and Desbonnet, J., "Browser-style interfaces to a home automation network", IEEE Transactions on Consumer Electronics Volume 43 4.
• Publication/Filing Date: Volume 43 4 suggests a publication in 1997 or 1998, as IEEE Transactions on Consumer Electronics is a periodical. The patent explicitly states Corcoran describes the use of a web browser and the WWW for a standard interface, both local and remote.
• Brief Description: This paper describes the use of a web browser and the World Wide Web (WWW) to provide a standard interface for both local and remote monitoring and control of a home automation network.
• Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant to the core concept of US 8,914,526, as it directly addresses web browser-based interfaces for home automation. The patent itself identifies problems with Corcoran's system, specifically that it assumes the site to be controlled is actively connected to the Internet for remote operation, and that initiating a direct connection manually requires special knowledge and can be expensive for geographically remote users. This suggests that claims in US 8,914,526, particularly claims 1, 57, 58, and 59, which emphasize the "on-demand" connection by a communications server in the extranet to a periodically unconnected home gateway, and the system for handling alarm and surveillance data, aim to overcome the limitations of Corcoran's work. Claims that detail the extranet initiating the connection to the gateway rather than the home being continuously connected, or those regarding the secure storage and handling of alarm data, would likely be distinguished from Corcoran.To identify the most relevant prior art for US patent 8,914,526, I will examine the patent's own citations as well as any other relevant prior art mentioned in the patent text. I will focus on the cited references that predate the filing date of US 8,914,526, which is December 17, 1999.

Most Relevant Prior Art for US Patent 8,914,526

Based on the information available in the patent document, the following prior art references are explicitly discussed as being relevant to the invention:

1. PCT Patent Publication Number WO 94/24803

• Full Citation: PCT Patent Publication Number WO 94/24803.
• Publication/Filing Date: The "94" in the publication number indicates a publication year of 1994, which predates the December 17, 1999, filing date of US 8,914,526.
• Brief Description: This PCT publication describes a communication node between data and telecommunication networks that enables communication between users employing different types of terminals, such as telephones and computers.
• Potential Anticipation (35 U.S.C. § 102): This reference broadly covers the concept of interconnecting different networks and terminals for communication. While fundamental, the specific architecture for remote monitoring and control of home environments using a standard web browser and an extranet, as detailed in the independent claims of US 8,914,526 (Claims 1, 57, 58, 59), would likely be considered distinct from the general inter-network communication described in WO 94/24803.

2. PCT Patent Publication Number WO 98/19445

• Full Citation: PCT Patent Publication Number WO 98/19445.
• Publication/Filing Date: The "98" in the publication number indicates a publication year of 1998, which predates the December 17, 1999, filing date of US 8,914,526.
• Brief Description: This document describes a service node situated between Internet networks and a telecommunications network. It is used to order telephony services through HTML pages from a computer with a WWW browser. It also outlines a method for calling a subscriber where the call is initiated by a computer, but the connection is established between the telephones of a first and second subscriber. The service node communicates with computers using the HTTP protocol and stores data related to a subscriber for telephony service requests.
• Potential Anticipation (35 U.S.C. § 102): This reference is more closely aligned with US 8,914,526 than WO 94/24803 because it involves using a web browser and HTTP to interact with a service node on a telecommunications network for service ordering. This could potentially anticipate elements of claims 1, 57, 58, and 59 that describe a user initiating actions via a web browser on an external network to interact with a communications server in an extranet. However, US 8,914,526 primarily focuses on remote monitoring and control of home networks and security devices, with an "on-demand" connection established by the communications server to a home gateway that is normally in an unconnected state. The described system in WO 98/19445 is centered on ordering telephony services.

3. "Browser-style interfaces to a home automation network" by D. Corcoran and J. Desbonnet

• Full Citation: Corcoran, D., and Desbonnet, J., "Browser-style interfaces to a home automation network," IEEE Transactions on Consumer Electronics Volume 43 4.
• Publication/Filing Date: As this is cited as "Volume 43 4" of a periodical, it indicates a publication in 1997 or 1998, predating the filing date of US 8,914,526.
• Brief Description: This paper details the use of a web browser and the World Wide Web (WWW) to provide a standard interface for both local and remote interaction with a home automation network.
• Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant as it directly addresses the use of web browser-based interfaces for home automation, encompassing both local and remote control. The US 8,914,526 patent itself explicitly identifies a problem with Corcoran's system: for remote monitoring and control, it is assumed that the site to be controlled is actively connected to the Internet. Additionally, initiating a manual connection from a remote location is noted as requiring special knowledge and telecommunications access facilities, and being potentially expensive for geographically remote users. Therefore, aspects of US 8,914,526, particularly within claims 1, 57, 58, and 59, which describe the communications server establishing an "on-demand" connection to a typically unconnected gateway in the home network, and mechanisms for secure handling of alarm and surveillance data, aim to address these limitations of Corcoran's disclosed system.

Obviousness Analysis under 35 U.S.C. § 103 for U.S. Patent 8,914,526

This section analyzes the obviousness of U.S. Patent 8,914,526 under 35 U.S.C. § 103, considering combinations of prior art references. The objective is to identify whether the claimed invention, as a whole, would have been obvious to a person having ordinary skill in the art at the time of the invention (priority date: December 17, 1998).

Prior Art References:

1. Corcoran and Desbonnet, "Browser-style interfaces to a home automation network" (1997) (hereinafter "Corcoran"): This non-patent literature reference describes the use of a web browser and the World Wide Web (WWW) for both local and remote standard interfaces in a home automation network. It discusses browsing and navigation of network devices and context structures, and how a user can control these devices from any computer with an Internet connection via a conventional web browser and Java. However, Corcoran assumes that for remote monitoring and control, the site to be controlled is actively connected to the Internet at the time remote operation is desired.
2. PCT Patent Publication Number WO 94/24803 (hereinafter "WO '803"): This publication describes a communication node between data and telecommunication networks that enables communication between users using different types of terminals, such as telephones and computers.
3. PCT Patent Publication Number WO 98/19445 (hereinafter "WO '445"): This publication describes a service node between Internet networks and a telecommunications network used to order telephony services via HTML pages from a computer with a WWW browser. It also describes a method of calling a subscriber where the call is ordered by computer but the connection is set up between telephones. The service node communicates using HTTP protocol and stores subscriber data for telephony services.

Obviousness Combinations and Rationale:

The independent claims of US 8,914,526 (Claims 1, 57, 58, and 59) generally describe a system for remote access of home or user premises networks using a web browser, an extranet (which can be a VPN), communication servers, and in-home connection gateways. A key feature is the on-demand connection establishment initiated by the extranet's communication server to the home gateway, allowing monitoring and control via web pages served from the gateway, and explicit mention that the communication server does not directly connect to the networked components within the home.

Combination 1: Corcoran in view of WO '803 and WO '445

A person having ordinary skill in the art (PHOSITA) at the time of the invention would have been motivated to combine the teachings of Corcoran with those of WO '803 and WO '445 to arrive at the claimed invention.

Corcoran clearly establishes the concept of using a standard web browser for both local and remote monitoring and control of home automation networks. It teaches that the interface supports browsing and navigation of network devices and allows control from any internet-connected computer via a web browser. This addresses the core idea of web-based control and monitoring.

However, Corcoran has a notable limitation: it assumes the home automation site is actively connected to the Internet for remote operation. This is where the teachings of WO '803 and WO '445 become relevant.

• WO '803 discloses a communication node between data and telecommunication networks, enabling communication between different types of terminals. This teaches the general concept of interconnecting different networks and devices.
• WO '445 describes a service node between Internet and telecommunication networks that uses HTML pages and HTTP protocol for ordering telephony services and setting up connections. Critically, it describes a system where a service node communicates with computers using HTTP and stores subscriber data for telephony services, implying an on-demand connection or interaction.

Motivation for Combination:

The PHOSITA, recognizing the limitation in Corcoran regarding the need for a continuously active internet connection at the home, would have been motivated to find a more efficient and cost-effective way to establish remote connections. WO '445 provides a clear teaching of a "service node" (analogous to the communications server in '526) interacting with client computers over the Internet using HTTP and establishing connections over a telecommunications network based on stored subscriber data. It would have been obvious to adapt this "on-demand connection" mechanism from WO '445 to the remote home automation scenario described in Corcoran.

Specifically:

• Extranet and Communications Server (Claim 1, 58, 59): Corcoran describes remote access over the Internet. WO '445 describes a service node on an Internet network facilitating connections. The concept of an "extranet" as a private network overlaid on the Internet (as taught in US 8,914,526) would be an obvious architectural choice for security and managed access, particularly given the existing knowledge of VPNs for security and privacy at the priority date. The communications server in the extranet, as in US 8,914,526, would simply be the service node of WO '445, adapted to manage connections to home gateways rather than just telephony services.
• Connection Gateway (Claim 1, 57, 58, 59): Corcoran discusses "network devices" within the home automation network. The "gateway" in US 8,914,526 acts as a hub and internet connection mechanism for these devices. It would be obvious to a PHOSITA to implement Corcoran's network devices through a dedicated gateway at the user premises that can establish an on-demand connection to the external network, leveraging the teachings of WO '803 and WO '445 regarding communication nodes and service nodes facilitating connections over telecommunication networks. This gateway would contain the web server to serve information related to user premises appliances, as described in US 8,914,526, thereby handling the interaction with the home network devices locally and serving web pages to the remote user.
• On-Demand Connection and Authorization: The problem of an expensive, continuously active connection in Corcoran would naturally lead a PHOSITA to consider an "on-demand" connection. WO '445's service node that stores subscriber data and sets up connections provides a direct motivation for this. Integrating user authentication (as described in US 8,914,526) with the URL access and connection initiation process would be a standard security practice for any remote access system, especially one involving a "private" extranet.
• Serving Webpages from the Gateway (Claim 1, 57, 58, 59): Corcoran teaches using web pages for control and monitoring. US 8,914,526 specifies that the extranet obtains information from the connection gateway and serves a webpage to the Internet browser, and that control is possible only by interaction with information served by the gateway. This is directly supported by Corcoran's teaching of a "browser-style interface" where the user accesses HTML pages on the gateway for monitoring and control. The gateway web server serving information through HTML pages to the user is explicitly mentioned in US 8,914,526 and would be a straightforward implementation given Corcoran's premise.
• Mobile Device Access (Claim 59): Corcoran mentions access from "any computer with an Internet connection". At the priority date, the concept of mobile devices with web browsing capabilities was emerging (e.g., PDAs, early mobile phones with WAP). It would be an obvious design choice for a PHOSITA to extend the web-based remote monitoring and control system of Corcoran, combined with the on-demand connection mechanisms of WO '445, to mobile devices, especially given the general desire for ubiquitous access to control and monitoring systems. WO '445 already deals with "different types of terminals" for communication.

Therefore, the combination of Corcoran, WO '803, and WO '445 would render the independent claims of US 8,914,526 obvious to a PHOSITA. The motivation would be to overcome the limitations of continuous internet connectivity in Corcoran by employing known methods of on-demand connection establishment and authenticated access over telecommunication networks, as taught by the PCT publications, within the context of web-based home automation.