Obviousness

Obviousness Analysis of US12240457B1 Under 35 U.S.C. § 103

This analysis identifies combinations of prior art references that would render the claims of US patent 12240457B1 obvious to a person having ordinary skill in the art (PHOSITA), and explains the motivation for such combinations. The analysis focuses on independent claims 1 and 12, which share similar core elements, and their dependent claims.

Independent Claims 1 and 12 Core Elements:

Both independent claims describe a method where a vehicle's drive system (Claim 1) or controller (Claim 12):

1. Monitors steering control while driving in a first direction.
2. Offers a driver a change from one of the drive mode and reverse mode to the other based on the steering control.
3. Changes mode in response to a non-directional approval by the driver of the offered change.

The critical distinguishing features identified in US12240457B1 over the general prior art are:

• The "offering" of a mode change (between drive and reverse) based on observed steering control patterns (or sequences).
• The requirement of a non-directional driver approval for the change to be enacted, meaning the driver confirms the proposed direction without explicitly selecting the direction again.

Combination 1: US9085321B2 (Unparking Control) + US12240457B1's Own Background Art (Non-Directional Approval)

References:

• US9085321B2 ("Unparking control system and unparking control method using the same"): This patent explicitly teaches a system and method for controlling a vehicle during an "unparking" maneuver.
• Background of US12240457B1 (Description,-): The patent itself describes an existing system where a vehicle automatically selects a direction when initially proceeding from a parked condition, offers that proposed direction to the driver, and the driver confirms with a "control input that conveys no direction information and is the same input regardless of direction proposed" (e.g., a tap on the brake).

Motivation for Combination and Obviousness Rationale:
A PHOSITA, aiming to improve the user experience and safety of an unparking system like that taught by US9085321B2, would be motivated to integrate the known "offering" and "non-directional approval" mechanism. The unparking process inherently involves monitoring steering control while the vehicle moves in a first direction (e.g., reversing out of a spot) and then shifting to the other mode (e.g., drive). A PHOSITA would recognize that unparking maneuvers are characterized by specific steering control patterns and sequences (e.g., initially backing straight, then turning sharply, then straightening the wheels as the vehicle stops to prepare for forward movement).

The background of US12240457B1 explicitly highlights the problem with existing systems: they are "unsuitable for gear changes while underway and operating the vehicle, which are rare except when encountering unexpected obstacles and in routine parking and unparking maneuvers, in which case the user selection of direction is always indicated deliberately each time" (Description,). It further notes that a "screen swipe may be a distraction, require visual observation to reach a small area, and may be a non-intuitive direction for some users," especially "when in a parking lot context when traffic may come from different direction, when other drivers may have distracted attention, and in which pedestrians and obstacles may be present" (Description,).

Given the known problem of distraction and the existence of "non-directional approval" for initial vehicle departure, it would have been obvious for a PHOSITA to apply this proven convenience and safety feature to the analogous "unparking" scenario. The "steering control patterns" characteristic of unparking (as described in FIG. 2 of US12240457B1, showing steering wheel angle changes during unparking) would serve as the natural trigger for the system to "offer" the gear change. This combination directly addresses the stated problem by reducing driver distraction during routine unparking maneuvers, leading to the methods claimed in independent claims 1 and 12.

Dependent Claims Covered by this Combination:

• Claims 2, 3, 13, 14 (Pattern/sequence of steering control movements): The unparking process inherently involves detecting and responding to patterns or sequences of steering (e.g., turning sharply while reversing, then straightening). It would be obvious to use these patterns as the basis for offering a gear change.
• Claims 4, 15 (Brake control actuation for approval): This is explicitly mentioned as an example of non-directional approval in the background art of US12240457B1 (Description,,).
• Claims 5, 16 (Foot shifting from accelerator to tap brake): This is a specific, known implementation of brake-based approval, particularly relevant in vehicles with one-pedal driving, as noted in US12240457B1 (Description,).
• Claims 9, 20 (Changing direction without driver indication of direction other than approval): This is the fundamental "non-directional approval" concept, explicitly found in the background art acknowledged by US12240457B1.
• Claims 10, 21 (Changing modes without operation of a selector): This is a direct consequence of implementing non-directional approval; if the system proposes the direction and the driver merely approves, a traditional directional selector is not operated to choose the next gear.
• Claims 11, 22 (Specific sequence of driving, steering change, and brake operation): This describes the typical maneuver shown in FIG. 2 of US12240457B1 (reverse with initial steering, stop, change steering, brake for approval). This sequence is precisely the "pattern of steering control movements" that an unparking system (US9085321B2) would monitor and use to offer a gear change, with the approval being a known non-directional input.

Combination 2: US11001301B2 (Semi-Autonomous Unparking) + US20240051558A1 (Automated Direction Adjustment) + General Knowledge of Machine Learning for Pattern Recognition

References:

• US11001301B2 ("Method for moving a motor vehicle out of a parking space with at least semi-autonomous manoeuvring"): This patent describes a system for semi-autonomous movement out of a parking space.
• US20240051558A1 ("Automated adjustment of vehicle direction based on environment analysis"): This patent application discusses automated adjustment of vehicle direction based on environmental analysis.
• General Knowledge of Machine Learning/AI for Pattern Recognition in Vehicles: As acknowledged by US12240457B1 itself, "The controller may be programmed by artificial intelligence data derived from multitudes of parking lot navigations to determine actual patterns when auto-shifting might be safely offered... AI systems would simply derive the rules from typical driver behavior" (Description,).

Motivation for Combination and Obviousness Rationale:
A PHOSITA tasked with enhancing a semi-autonomous unparking system (US11001301B2) to make it more intuitive and effective would consider how to automatically infer driver intent for gear changes. US20240051558A1 demonstrates that automated systems can adjust vehicle direction based on environmental analysis, implying the ability to determine appropriate maneuvers and directions.

Given the goal of improving an unparking system, a PHOSITA would recognize that human drivers exhibit predictable steering and velocity patterns during unparking (as explicitly detailed in US12240457B1's description, and). It would be obvious to apply widely known machine learning techniques (as acknowledged in US12240457B1's FIG. 3 description) to analyze "multitudes of parking lot navigations" to detect these specific "wheel angle patterns, velocity patterns" (Description,) that reliably indicate a driver's desire for a gear change (e.g., from reverse to drive after backing out sufficiently). Once such a pattern is detected, the system could "offer" the gear change.

Furthermore, integrating the non-directional approval mechanism (as discussed in Combination 1 and present in US12240457B1's background art) into this AI-enhanced semi-autonomous unparking system would be an obvious design choice to minimize driver distraction and cognitive load. The motivation is to create a more seamless and safer driver assistance experience by intelligently predicting the desired gear change based on typical driver behavior patterns and allowing for quick, non-directional confirmation.

Dependent Claims Covered by this Combination:

• Claims 6, 17 (Steering input greater than a selected steering angle threshold): This is a specific parameter that would be readily identifiable and usable by an AI system or explicit algorithm in an unparking scenario. The patent itself notes "steering angles are larger for unparking" (Description,).
• Claims 7, 18 (Vehicle velocity below a selected velocity threshold): This is a standard condition for safe gear changes in parking maneuvers, explicitly mentioned in US12240457B1 (Description,). An obvious design consideration for any automated gear selection system.
• Claims 8, 19 (Distance traveled): US12240457B1 suggests "employ distance traveled information, offering an auto-shift any time a vehicle reverses and stops within a selected distance typical for such parking lots" (Description,). This is another measurable parameter a PHOSITA would use in an intelligent unparking system.

Conclusion

Based on the analysis, the core inventive concepts of US12240457B1, particularly the offering of a mode change based on steering control patterns and requiring non-directional driver approval, would have been obvious to a PHOSITA. This is due to the combination of existing unparking assistance systems (US9085321B2, US11001301B2), the known "non-directional approval" mechanism explicitly acknowledged as background art within US12240457B1, and the widespread application of AI/machine learning for pattern recognition in automotive controls. The motivation would be to improve convenience and safety by reducing driver distraction during routine, low-speed maneuvers like unparking.