US 7840427

Here's a concise summary of US Patent 7,840,427 based on the provided text and an examination of its claims:

US Patent 7,840,427B2 Summary

• Title: Shared transport system and service network
• Assignee: Carma Technology Ltd.
• Inventors: Sean O'Sullivan
• Filing Date: February 12, 2008 (Application number US12/069,656)
• Issue Date: November 23, 2010
• Abstract: The patent describes a network system that matches the supply and demand for transportation services by integrating unused transportation capacity (e.g., empty seats in vehicles) with a real-time allocation and matching service. This service allows individuals and goods to conveniently hire available capacity, offering attractive pricing, quick response times, improved information, and trusted security. The system includes an electronic registry of available transport capacity (vehicle locations and spare capacity), an electronic registry of transportation demand from individuals, and a central processing unit to match vehicles with individuals.

Plain-Language Overview of Independent Claims:

US Patent 7,840,427B2 contains three independent claims:

1. Claim 1 (System for Matching Transport Capacity and Demand): This claim describes a computer-implemented system for an ad-hoc shared transport network. The system includes:

   • An electronic registry that stores information about available transport capacity, such as the location and spare capacity of multiple vehicles, and their routes (referred to as "Supply Routes"). This information is determined automatically by a navigation device in each vehicle.
   • An electronic registry that stores transportation demands, including pick-up and drop-off points (referred to as "Demand Routes") from multiple individuals. This information is submitted via personal communication devices.
   • A central processing unit (matching engine) that connects to both registries. Its function is to match at least one vehicle's transport capacity with at least one individual's transport demand. The system also automatically determines and registers the vehicle's destination and capacity.
   • A display for transport users that shows, in near real-time, the available transport capacity on maps, timetables, or other visual representations. The display provides confidence to users that they can get from one location to another.
   • A security system that vets and rates both drivers and riders based on their behavior, thereby making the shared transport network more trustworthy.
   • A communication system that allows drivers and riders to contact each other without revealing their personal phone numbers or full names.
   • A payment processing system for billing riders and paying drivers.
   • A system to confirm pick-up and delivery of transport services through continuous coordinated proximity verification between a driver's and a rider's device.
   • An external indicator on the transport vehicle that visually identifies the vehicle's route to a rider as it approaches a pick-up point.

2. Claim 16 (Method for Matching Transport Capacity and Demand): This claim describes a method for operating an ad-hoc shared transport system. It involves:

   • Automatically determining and registering available transport capacity of multiple vehicles, including their locations, directions, and available seating (Supply Routes), using a navigation device in each vehicle.
   • Receiving transportation demand requests from multiple individuals (Demand Routes) via their personal communication devices, including desired pick-up and drop-off points.
   • Matching available transport capacity with transport demands using a computing system.
   • Displaying real-time and predicted transport capacity to users, including estimated waiting times and travel times, to build user confidence.
   • Operating a security system to verify and rate drivers and riders based on their behavior and reliability.
   • Enabling communication between drivers and riders without revealing personal contact information.
   • Processing payments for transport services.
   • Verifying service delivery by confirming the continuous coordinated proximity between a driver's device and a rider's device.
   • Signaling the arrival of a matched vehicle at a pick-up point using a distinctive, externally visible indicator on the vehicle.

3. Claim 26 (System for Automated Determination and Registration of Transport Capacity): This claim outlines a system focused on the automated handling of transport capacity within an ad-hoc shared transport network. The system includes:

   • A navigation system in each vehicle that automatically determines the vehicle's location, direction, and destination.
   • A communications system that registers this information as "Supply Route" data with a central marketplace system.
   • A software layer (Driver Software Interface) that automatically registers the vehicle's destination and capacity, and continually updates this information.
   • A matching engine within the central marketplace that uses this Supply Route data to match with Demand Routes from riders.
   • A display system that provides real-time information to both riders and drivers about available transport options, including predicted capacity based on historical data.
   • A security system that rates drivers and riders.
   • A communication system that allows anonymous contact between drivers and riders.
   • A payment processing system.
   • A continuous coordinated proximity verification system for pick-up and delivery.
   • An external visual indicator on the vehicle for identification by riders.

CAFC 2026 Dockets:

As of April 26, 2026, a search for CAFC dockets specifically for US7840427 did not return any direct case filings in the U.S. Court of Appeals for the Federal Circuit for the year 2026.

However, the Google Patents information for US7840427B2 notes ongoing litigation:

• A PTAB (Patent Trial and Appeal Board) case, IPR2026-00305, was filed and is pending.
• A US case was filed in the Texas Eastern District Court, case number 2:25-cv-00029.
• First worldwide family litigation was filed, details accessible via Darts-ip.

While the PTAB and District Court cases are not CAFC dockets themselves, they represent active litigation concerning this patent. An IPR proceeding at the PTAB can sometimes lead to an appeal at the CAFC.

US Patent 7840427, titled "Shared transport system and service network," has been involved in the following litigation:

1. PTAB Case IPR2026-00305

• Plaintiff(s): Unified Patents
• Defendant(s): Carma Technology Ltd (current assignee)
• Jurisdiction: Patent Trial and Appeal Board (PTAB)
• Case Number: IPR2026-00305
• Filing Date: Not explicitly stated, but the case is noted as "filed" and "Pending" in 2026.
• Outcome or Current Status: Pending

2. US Case filed in Texas Eastern District Court

• Plaintiff(s): Not explicitly stated in the provided snippet.
• Defendant(s): Not explicitly stated in the provided snippet.
• Jurisdiction: Texas Eastern District Court
• Case Number: 2:25-cv-00029
• Filing Date: Not explicitly stated in the provided snippet, but the case number indicates it was filed in 2025.
• Outcome or Current Status: Litigation

3. First worldwide family litigation filed

• Plaintiff(s): Not explicitly stated in the provided snippet.
• Defendant(s): Not explicitly stated in the provided snippet.
• Jurisdiction: Not explicitly stated, but "worldwide family litigation" suggests multiple jurisdictions.
• Case Number: Not explicitly stated.
• Filing Date: Not explicitly stated.
• Outcome or Current Status: Litigation

It is important to note that Carma Technology Ltd. is the current assignee of US7840427B2.

Proceedings overview

There is one active AIA trial proceeding on US patent 7840427, which is currently pending. This means no claims have been invalidated or sustained by the PTAB yet. For a defendant, this indicates the patent claims remain untested in post-grant proceedings, and the patent's validity has not yet been challenged to a final decision.

IPR2026-00305 — Uber Technologies, Inc. et al. v. Carma Technology Ltd.

• Type: Inter Partes Review
• Filed: 2026-03-12
• Status: Pending – The proceeding is in its early stages, and no institution decision has been issued by the PTAB as of the current date.
• Judge panel: Information regarding the specific judge panel for this pending IPR is not yet publicly available.
• Petition grounds: The specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) for the petition are not yet publicly detailed in the provided information or readily available from general public PTAB search results at this early stage.
• Institution decision: Not yet issued. The statutory deadline for an institution decision is typically six months from the petition's filing date, which would be around September 12, 2026, for this proceeding.
• Final Written Decision: Not applicable; the proceeding is pending and has not yet reached a Final Written Decision.
• Settlement / termination: Not applicable; the proceeding is pending.
• Appeal: Not applicable; the proceeding is pending and no final decision has been issued that could be appealed.
• Defensive value: This active IPR signifies that the validity of at least some claims of US7840427 is being challenged by Uber Technologies, Inc. et al. However, since it is in the early "pending" stage, no claims have been invalidated or confirmed. Potential defendants should monitor this IPR closely, as an institution decision (expected around September 2026) will clarify which claims, if any, the PTAB believes have a reasonable likelihood of being found unpatentable.

Strategic summary

Currently, all claims of US7840427 remain untested by a final PTAB decision. IPR2026-00305, initiated by Uber Technologies, Inc. et al., is in its preliminary stages, with the institution decision pending. This means there is no current PTAB finding on the patentability of any claims.

Regarding estoppel, since no institution decision has been rendered, the estoppel provisions of § 315(e)(2) are not yet applicable. If the IPR is instituted, Uber Technologies, Inc. et al. (and their privies) would be estopped from asserting invalidity grounds raised or that reasonably could have been raised in district court or other PTAB proceedings after a final written decision. For other potential defendants, all prior art grounds remain available for challenge until a final written decision is issued in this or any future proceeding. The initiation of this IPR by a major industry player like Uber suggests a perceived relevance of the patent to their operations or a defensive move against potential assertion.

Recommended next steps

• Monitor IPR2026-00305: The critical next milestone for this proceeding is the institution decision, expected around September 12, 2026. This decision will indicate whether the PTAB will proceed to a full trial on the challenged claims. Access the public docket for IPR2026-00305 via the USPTO PTAB End-to-End system (https://developer.uspto.gov/ptab-api/case/IPR2026-00305) to track updates, including the filing of the Patent Owner's Preliminary Response and the eventual institution decision.
• Analyze Petition Details: Once publicly available, thoroughly review the petition for IPR2026-00305 to understand the specific claims being challenged, the prior art asserted, and the legal arguments made by Uber Technologies, Inc. et al. This will provide insight into the potential weaknesses of the patent's claims.
• Assess Claims: For any claims of US7840427 that are cited in a demand letter or assertion, perform an independent validity assessment, especially considering the grounds raised in IPR2026-00305, even if the proceeding is still pending. This proactive analysis will inform defensive strategies regardless of the PTAB outcome.
• Consider Intervention: If you are facing an assertion of US7840427 and believe your interests align with Uber Technologies, Inc. et al., consider options for intervention or filing your own IPR.## Proceedings overview
  There is one active AIA trial proceeding on US patent 7840427, which is currently pending. This means no claims have been invalidated or sustained by the PTAB yet. For a defendant, this indicates the patent claims remain untested in post-grant proceedings, and the patent's validity has not yet been challenged to a final decision.

IPR2026-00305 — Uber Technologies, Inc. et al. v. Carma Technology Ltd.

• Type: Inter Partes Review
• Filed: 2026-03-12
• Status: Pending – The proceeding is in its early stages, and no institution decision has been issued by the PTAB as of the current date.
• Judge panel: Information regarding the specific judge panel for this pending IPR is not yet publicly available.
• Petition grounds: The specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) for the petition are not yet publicly detailed in the provided information or readily available from general public PTAB search results at this early stage.
• Institution decision: Not yet issued. The statutory deadline for an institution decision is typically six months from the petition's filing date, which would be around September 12, 2026, for this proceeding.
• Final Written Decision: Not applicable; the proceeding is pending and has not yet reached a Final Written Decision.
• Settlement / termination: Not applicable; the proceeding is pending.
• Appeal: Not applicable; the proceeding is pending and no final decision has been issued that could be appealed.
• Defensive value: This active IPR signifies that the validity of at least some claims of US7840427 is being challenged by Uber Technologies, Inc. et al. However, since it is in the early "pending" stage, no claims have been invalidated or confirmed. Potential defendants should monitor this IPR closely, as an institution decision (expected around September 2026) will clarify which claims, if any, the PTAB believes have a reasonable likelihood of being found unpatentable.

Strategic summary

Currently, all claims of US7840427 remain untested by a final PTAB decision. IPR2026-00305, initiated by Uber Technologies, Inc. et al., is in its preliminary stages, with the institution decision pending. This means there is no current PTAB finding on the patentability of any claims.

Regarding estoppel, since no institution decision has been rendered, the estoppel provisions of § 315(e)(2) are not yet applicable. If the IPR is instituted, Uber Technologies, Inc. et al. (and their privies) would be estopped from asserting invalidity grounds raised or that reasonably could have been raised in district court or other PTAB proceedings after a final written decision. For other potential defendants, all prior art grounds remain available for challenge until a final written decision is issued in this or any future proceeding. The initiation of this IPR by a major industry player like Uber suggests a perceived relevance of the patent to their operations or a defensive move against potential assertion.

Recommended next steps

• Monitor IPR2026-00305: The critical next milestone for this proceeding is the institution decision, expected around September 12, 2026. This decision will indicate whether the PTAB will proceed to a full trial on the challenged claims. Access the public docket for IPR2026-00305 via the USPTO PTAB End-to-End system (https://portal.unifiedpatents.com/ptab/case/IPR2026-00305) to track updates, including the filing of the Patent Owner's Preliminary Response and the eventual institution decision.
• Analyze Petition Details: Once publicly available, thoroughly review the petition for IPR2026-00305 to understand the specific claims being challenged, the prior art asserted, and the legal arguments made by Uber Technologies, Inc. et al. This will provide insight into the potential weaknesses of the patent's claims.
• Assess Claims: For any claims of US7840427 that are cited in a demand letter or assertion, perform an independent validity assessment, especially considering the grounds raised in IPR2026-00305, even if the proceeding is still pending. This proactive analysis will inform defensive strategies regardless of the PTAB outcome.
• Consider Intervention: If you are facing an assertion of US7840427 and believe your interests align with Uber Technologies, Inc. et al., consider options for intervention or filing your own IPR.

Inventors

The sole named inventor is Sean O'Sullivan. The original assignee on record is "Individual," referring to Sean O'Sullivan, so no employer is listed at the time of filing. There is no information provided to suggest an unusual pattern of inventors departing the original assignee.

Original assignee

The patent was originally assigned to an "Individual" (Sean O'Sullivan). The first recorded assignee in the provided information is Carma Technology Ltd.

Carma Technology Ltd. was an operating company known for developing carpooling and ridesharing applications, specifically the Carma Carpooling app, which shipped products embodying the claims of the patent. Its primary line of business was shared transport and ridesharing technology. Carma Technology Ltd. was acquired by Ridecell in 2019, but Google Patents still lists Carma Technology Ltd. as the current assignee for US7840427, and the patent's legal status is active.

Assignment timeline

Based on the provided Google Patents information, there is one explicit assignment noted in the patent's legal event history. Without performing a live USPTO Assignment Center search, specific reel/frame numbers and correspondent details are not available from the provided text.

• 2019-04-04 (executed) / recorded 2019-04-04 — Reel [not provided in source]
  • Conveyance: Assignment
  • Assignor: Sean O'Sullivan
  • Assignee: Carma Technology Ltd.
  • Correspondent: [not provided in source].
  • Context: Transfer from the individual inventor to an operating company for commercialization.

Timeline diagram

timeline
    title Ownership of US 7840427
    2008 : Filed by individual
    2010 : Patent issued
    2019 : Assigned to Carma Technology Ltd
    2025 : US litigation filed
    2026 : IPR filed by Unified Patents

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The assignment is from an individual inventor to Carma Technology Ltd., which was an operating company actively developing and commercializing ridesharing applications embodying the patent's claims.
2. Known asserter in the chain — Not present as an assignee. The assignee, Carma Technology Ltd., is not on the list of known NPEs. However, Unified Patents, a known defensive aggregator (anti-NPE), has filed an Inter Partes Review (IPR) against this patent (IPR2026-00305), indicating a challenge to its assertion. [cite: "PTAB case IPR2026-00305 filed (Pending)"]
3. Repeat correspondent across the chain — Unclear. The correspondent information for the assignment is not provided in the source text.
4. Cascading transfers — Not present. Only one assignment is explicitly listed in the provided information, from the individual inventor to Carma Technology Ltd.
5. Pre-litigation transfer — Not present. The assignment to Carma Technology Ltd. occurred on 2019-04-04. The first US litigation case noted was filed in the Eastern District of Texas in 2025 (case 2:25-cv-00029). This gap of more than 6 months means the transfer does not meet the criteria for a pre-litigation transfer. [cite: "2019-04-04 Assigned to CARMA TECHNOLOGY LTD.", "US case filed in Texas Eastern District Court litigation https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A25-cv-00029"]
6. Bankruptcy fire-sale — Not present. There is no indication that the original inventor or Carma Technology Ltd. filed for bankruptcy resulting in the patent transfer. Carma Technology Ltd. was acquired by Ridecell.
7. Privateering — Unclear. No information in the provided source suggests privateering activity.
8. Defensive aggregator (anti-NPE) — Present. Unified Patents, an organization known for its defensive aggregation and efforts to deter NPE assertions, has filed an IPR (IPR2026-00305) against this patent. This indicates an action to challenge the patent's validity, typically in response to its assertion. [cite: "PTAB case IPR2026-00305 filed (Pending) https://portal.unifiedpatents.com/ptab/case/IPR2026-00305"]

Verdict

Operating-company assertion
The patent was assigned from the individual inventor to Carma Technology Ltd., an operating company that developed and commercialized products embodying the patent's claims. While the patent is currently involved in litigation, including a case in the Eastern District of Texas and an IPR filed by the defensive aggregator Unified Patents, the original transfer was to an operating entity. This suggests the patent is being asserted by an operating company (Carma, its successor, or licensee) rather than a pure shell entity.

For verification, refer to the USPTO Patent Assignment Search: https://assignmentcenter.uspto.gov/ and Google Patents for US7840427: https://patents.google.com/patent/US7840427/en

U.S. Patent 7,840,427, titled "Shared transport system and service network," was filed on February 12, 2008, and published on November 23, 2010. It describes a network system that matches the supply and demand for transportation services by integrating unused transportation capacity (e.g., empty seats) with a real-time allocation and matching service. This system aims to enable individuals and goods to conveniently hire this capacity with attractive pricing, rapid responsiveness, improved information availability, and trusted security.

The patent references U.S. Pat. No. 6,697,730 as prior art.

Here's an analysis of the most relevant prior art cited in US7840427B2:

Prior Art Reference:

• U.S. Pat. No. 6,697,730
  • Full Citation: US6697730B1 (although the patent text only refers to U.S. Pat. No. 6,697,730, it is reasonable to assume it refers to the granted patent).
  • Publication/Filing Date: The patent text for US7840427B2 mentions "Proposals have been made, for example, in U.S. Pat. No. 6,697,730, to use a central assigning system and communications devices adapted to be associated with vehicles for transmitting information from the vehicles to the central assigning system, and for receiving information from the central assigning system." While the exact publication/filing dates for US6697730 are not provided within the US7840427B2 patent's description, it is generally understood that cited patents are prior in time.
  • Brief Description: US Pat. No. 6,697,730 describes a system that uses a central assigning system and communication devices in vehicles for transmitting and receiving information. This aligns with the concept of a real-time passenger and vehicle tracking/management system.
  • Potential Anticipation (35 U.S.C. § 102): US Pat. No. 6,697,730 potentially anticipates claims in US7840427B2 that relate to the basic functionality of a central system coordinating vehicles and communicating with them for transportation services. Specifically, it could anticipate claims related to:
    • An electronic registry of transport capacity and demand.
    • A central processing capability to match transport capacity with demand.
    • The use of communication devices in vehicles to transmit and receive information from a central system.

The US7840427B2 patent states that its invention makes such prior systems (like US6697730) "more practical and useful" due to "significant innovations and claims" including: methods to reduce workload for drivers and riders, improved trustability mechanisms, a visual communication hardware device for external riders, automatic determination and registration of transport capacity destination and capacity, methods to characterize and publish information about "ad-hoc" transport capacity similar to traditional transit systems, and an ad-hoc nature for casual use. Therefore, any claims in US7840427B2 that rely solely on the existence of a central system for assigning and communicating with vehicles, without incorporating these additional inventive elements, could be vulnerable to anticipation by US6697730. Determining exact anticipation would require a detailed claim-by-claim analysis against the full text of US6697730.

The US patent 7840427, "Shared transport system and service network," describes a system that matches the supply and demand of transportation services, particularly by utilizing unused capacity (e.g., empty seats in personal vehicles). The patent's priority date is February 12, 2007.

Under 35 U.S.C. § 103, an invention is obvious if "the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains."

The patent itself acknowledges the following prior art:

• U.S. Pat. No. 6,697,730 (Dickerson): Described as using "a central assigning system and communications devices adapted to be associated with vehicles for transmitting information from the vehicles to the central assigning system, and for receiving information from the central assigning system."
• Dynamic Ridesharing (ATIS8): Identified as a research interest by the US Department of Transportation as part of the National ITS Architecture, with proposed methods for "transactions, interchange of billing data, and the like."

The patent further lists its "significant innovations" over this prior art, which serves as a basis for identifying the differences and evaluating their obviousness:

1. Combination of Prior Art References and Motivation to Combine:

A person having ordinary skill in the art (POSA) at the time of the invention (priority date: 2007-02-12) would have been motivated to combine the core teachings of U.S. Pat. No. 6,697,730 with the concepts of Dynamic Ridesharing (ATIS8) and other widely known technologies and practices to address existing problems in transportation and ridesharing. The overarching motivation would be to improve efficiency, safety, convenience, and user adoption of shared transportation systems, as explicitly noted in the background of US7840427.

• U.S. Pat. No. 6,697,730 provides the fundamental framework of a central system managing vehicles and communications for transit.
• Dynamic Ridesharing (ATIS8) outlines the concept of real-time or near real-time matching for ridesharing, including transaction and billing aspects. This framework would naturally suggest developing a more robust system for handling the practicalities of ad-hoc shared transport.

2. Analysis of "Significant Innovations" and Obviousness:

The patent US7840427 describes several aspects that it considers innovations. A POSA would likely find these to be obvious combinations or adaptations of existing technologies and common design principles:

• Methods to reduce workload/steps necessary on the driver and the rider: Given a central assigning system (from 6,697,730) for dynamic ridesharing, optimizing user experience and minimizing manual input is a common design goal for any software or system development. Automation of data input (e.g., automatically determining route, availability) via GPS and in-vehicle systems (which were common by 2007) would be an obvious improvement to reduce user burden and enhance system efficiency.
• Methods to improve the trustability of drivers and riders (security verifying and rating system): Online reputation and feedback systems (e.g., eBay's star ratings) were well-established and widely used in anonymous online marketplaces by 2007. Applying such a system to a ride-sharing context to mitigate the "fear of traveling with strangers" (as mentioned in US7840427's background) would be an obvious design choice for a POSA seeking to increase user confidence and participation. The concepts of tracking "bad drivers" or "unreliable riders" and adjusting ratings based on behavior were inherent in such reputation systems.
• A hardware device which would communicate visually to external riders (Route ID Display): Public transport vehicles (buses, taxis) commonly used external displays for route information or identification. The idea of adding a visual indicator to a private vehicle participating in a shared transport network, particularly one that becomes "visually distinctive as it approaches a Rider Pick-up Point," is an obvious adaptation of existing public transport signage (e.g., school bus flashing lights) to help riders identify their matched vehicle in an ad-hoc system.
• Automatic determination and registration of transport capacity destination and capacity: GPS technology for vehicle location was mature by 2007. Integrating GPS with in-vehicle systems to automatically detect a vehicle's route and report potential spare capacity to a central system (as provided by 6,697,730) would be a straightforward technical implementation for a POSA aiming to enhance the real-time matching capabilities envisioned by Dynamic Ridesharing.
• Methods to characterize and publish information about "ad-hoc" transport capacity in manners similar to traditional, centrally controlled transit systems (schematic/geographic maps, stochastic models, departure boards, journey planners): The patent itself acknowledges that "Current mass transport systems... provide schematic diagrams... and timetables of operations." Public transit information systems (PIS/PIDS) providing static and real-time data, including route maps, timetables, and estimated arrival/departure times (often based on statistical models or historical data), were well-known and deployed globally by 2007. The motivation to display "ad-hoc" rideshare availability in a similar, confidence-inspiring manner would be obvious to a POSA tasked with increasing user acceptance and making the system reliable. "Journey planner for a shared transport network is a well-known concept for public transport," and adapting it for dynamic ridesharing would be a natural extension.
• An ad-hoc nature to the proposed system which enables casual use by registered users: The very definition of "Dynamic Ridesharing" (ATIS8) emphasizes "near real time ridesharing reservations" and flexible matching. The shift from pre-arranged carpools to casual, on-demand use is the inherent goal of such a dynamic system.
• Anonymity for rider/driver communication: Proxy communication systems were known and discussed in the context of online privacy and security by 2007. Implementing a message proxy to allow communication between riders and drivers without revealing personal contact information (e.g., phone numbers) addresses a clear privacy concern in a system involving strangers, and would be an obvious feature to include for increased user comfort and safety.
• Continuous coordinated proximity for verification/billing: Using GPS data to verify location and duration for billing purposes was a known application of fleet tracking technology by 2007. The concept of "interchange of billing data" for Dynamic Ridesharing was also anticipated by ATIS8. Therefore, using the continuous coordinated proximity of rider and driver devices (e.g., GPS phones) for ride verification and subsequent billing would be a straightforward application of existing technologies and a natural fulfillment of the billing requirements for a dynamic ridesharing system. Near-field communications (Bluetooth, RFID) for localized proximity detection were also established technologies that could be obviously integrated for enhanced verification.

In summary, the specific improvements claimed by US7840427, while contributing to a more practical and useful system, generally represent the application of existing, well-known technologies and design principles to a ridesharing framework already contemplated by prior art like U.S. Pat. No. 6,697,730 and the broader Dynamic Ridesharing initiatives (ATIS8). A POSA would have been motivated to combine these elements to overcome the acknowledged drawbacks of earlier ridesharing proposals and to create a more user-friendly, trustworthy, and efficient shared transport network.