Prosecution Insights
Last updated: April 19, 2026
Application No. 19/087,488

TOUCHSCREEN SIGNAL RECOGNITION METHOD, APPARATUS, AND ELECTRONIC DEVICE

Final Rejection §103
Filed
Mar 22, 2025
Examiner
GUPTA, PARUL H
Art Unit
2627
Tech Center
2600 — Communications
Assignee
Lenovo (Beijing) Limited
OA Round
2 (Final)
61%
Grant Probability
Moderate
3-4
OA Rounds
2y 11m
To Grant
94%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allow Rate
375 granted / 617 resolved
-1.2% vs TC avg
Strong +33% interview lift
Without
With
+33.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
14 currently pending
Career history
631
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
71.3%
+31.3% vs TC avg
§102
15.2%
-24.8% vs TC avg
§112
6.4%
-33.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 617 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, 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. Patentability shall not be negated by the manner in which the invention was made. Claims 1-5 and 7-17 and 19-21 are rejected under 35 U.S.C. 103 as being unpatentable over Yuan et al., US Patent Publication 2022/0083194 in view of Rosenberg, US Patent Publication 2023/0289011. Regarding independent claim 1, Yuan et al. teaches a touchscreen signal recognition method comprising: within a scanning cycle, in response to a first scanning instruction, recognizing a touch signal on a touchscreen in a first scanning mode (mutual capacitance mode of paragraph 0029); in response to a second scanning instruction, determining whether the touch signal of the touchscreen has a corresponding ground signal in a second scanning mode (paragraph 0029 explains that the self-capacitance mode requires scanning a change to ground); and in response to a trigger area of the touch signal meeting a preset condition (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition), and the touch signal corresponding to the ground signal (paragraph 0029 explains the scanning of change with respect to ground), determining the touch signal as a target signal (to determine the touch as given in paragraph 0029), the preset condition including a number of sensor nodes included in the trigger area is less than a preset number (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition and the number of sensor nodes is the number of intersections of the channels). Yuan et al. does not specify that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle. Rosenberg teaches that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle (paragraphs 0012 and 0014 explain that the scan cycle has a touch segment where mutual-capacitance is used and a stylus segment where self-capacitance is used). It would be obvious to one of ordinary skill in the art before the effective filing date to allow both mutual-capacitance detection and self-capacitance detection in the same scanning cycle. The rationale to combine would be to track multiple types of input such as both touch and stylus inputs across the touch sensor surface (paragraph 0014 of Rosenberg). Regarding claim 2, Yuan et al. teaches the method according to claim 1, the first scanning mode is mutual capacitance scanning, and the second scanning mode is self-capacitance scanning (paragraph 0029 describes these two modes). Regarding claim 3, Rosenberg teaches further the method according to claim 1, wherein within the scanning cycle, in response to a scanning instruction: executing the first scanning mode and the second scanning mode in sequence (paragraph 0016 explains that the detection is done in mutual-capacitance mode and then self-capacitance mode); or executing the second scanning mode and the first scanning mode in sequence. Regarding claim 4, Yuan et al. teaches the method according to claim 1, wherein: the touchscreen includes a plurality of horizontal sensor lines and a plurality of vertical sensor lines (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system); each of the horizontal sensor lines and each of the vertical sensor lines are connected to a ground line and have a capacitance with the ground line (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system each being connected to ground to have a capacitance in the self-capacitance mode to ground); and an intersection of a horizontal sensor line and a vertical sensor line is a sensor node (paragraph 0029 explains how the touch is determined based on the intersection of the TX and RX such that the intersection is the node). Regarding claim 5, Yuan et al. teaches the method according to claim 4, wherein determining whether the touch signal has the corresponding ground signal in the second scanning mode (self-capacitance mode described in paragraph 0029) includes: in response to the second scanning instruction, detecting a capacitance value of a capacitance corresponding to each sensor line of the horizontal sensor lines and the vertical sensor lines (paragraphs 0029-0030 explain that in a self-capacitance mode, the capacitance is sensed of the horizontal and vertical channels by the capacitance detection system 223 of figure 2); in response to detecting a change in the capacitance value compared to a reference capacitance value, determining that the sensor line corresponding to the capacitance has the ground signal (paragraph 0029 explains how the change in capacitance value is scanned relative to ground based on the connection shown to ground in figure 1 where the reference value is the ground value, as also described in paragraph 0053); and in response to at least one sensor line corresponding to the touch signal having a ground signal, determining that the touch signal has the corresponding ground signal (figure 1 shows that each of the channels is connected to ground to be compared to the change to determine touch as given in paragraph 0029). Regarding claim 7, Rosenberg teaches further the method according to claim 1, further comprising: in response to a first operation mode start instruction, detecting the target signal in the first scanning mode (paragraphs 0012 and 0014 and 0016 explain the different modes used that have different instructions); and in response to a second operation mode start instruction, detecting the target signal in the first scanning mode and the second scanning mode (paragraphs 0012 and 0014 and 0016 explain the different modes used that have different instructions). Regarding claim 8, Rosenberg teaches further the method according to claim 7, further comprising: in response to a current operation mode being not a second operation mode, and detecting that a change amount of the capacitance value is smaller than a threshold, issuing the second operation mode start instruction; or obtaining the second operation mode start instruction through a user interface (paragraphs 0012 and 0014 and 0016 explain how the start instructions are based on timing and being next, which is set up through a user interface). Regarding independent claim 9, Yuan et al. teaches a touchscreen signal recognition apparatus comprising: a first scanning module configured to, within a scanning cycle, in response to a first scanning instruction, recognize a touch signal of a touchscreen in a first scanning mode (mutual capacitance mode of paragraph 0029); a second scanning module configured to, in response to a second scanning instruction, determine whether the touch signal of the touchscreen has a corresponding ground signal in a second scanning mode (paragraph 0029 explains that the self-capacitance mode requires scanning a change to ground); and a determination module configured to, in response to a trigger area of the touch signal meeting a preset condition (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition), and the touch signal having the corresponding ground signal (paragraph 0029 explains the scanning of change with respect to ground), determine the touch signal as a target signal (to determine the touch as given in paragraph 0029), the preset condition including a number of sensor nodes included in the trigger area is less than a preset number (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition and the number of sensor nodes is the number of intersections of the channels). Yuan et al. does not specify that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle. Rosenberg teaches that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle (paragraphs 0012 and 0014 explain that the scan cycle has a touch segment where mutual-capacitance is used and a stylus segment where self-capacitance is used). It would be obvious to one of ordinary skill in the art before the effective filing date to allow both mutual-capacitance detection and self-capacitance detection in the same scanning cycle. The rationale to combine would be to track multiple types of input such as both touch and stylus inputs across the touch sensor surface (paragraph 0014 of Rosenberg). Regarding claim 10, Yuan et al. teaches the apparatus according to claim 9, wherein: the first scanning mode is mutual capacitance scanning, and the second scanning mode is self-capacitance scanning (paragraph 0029 describes these two modes). Regarding claim 11, Rosenberg teaches further the apparatus according to claim 9, wherein within the scanning cycle, in response to a scanning instruction: the first scanning mode and the second scanning mode are executed in sequence (paragraph 0016 explains that the detection is done in mutual-capacitance mode and then self-capacitance mode); or the second scanning mode and the first scanning mode are executed in sequence. Regarding claim 12, Yuan et al. teaches the apparatus according to claim 9, wherein: the touchscreen includes a plurality of horizontal sensor lines and a plurality of vertical sensor lines (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system); each of the horizontal sensor lines and each of the vertical sensor lines are connected to a ground line and have a capacitance with the ground line (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system each being connected to ground to have a capacitance in the self-capacitance mode to ground); and an intersection of a horizontal sensor line and a vertical sensor line is a sensor node (paragraph 0029 explains how the touch is determined based on the intersection of the TX and RX such that the intersection is the node). Regarding independent claim 13, Yuan et al. teaches an electronic device comprising: one or more processors (part of chip 220 of figure 2 where implementing a given method through processors would be an obvious method of implementation that is well-known in the art); and one or more memories communicatively connected to the one or more processors and storing an instruction executable by the one or more processors that, when executed by the one or more processors (part of chip 220 of figure 2 where implementing a given method through processors would be an obvious method of implementation that is well-known in the art), causes the one or more processors to: within a scanning cycle, in response to a first scanning instruction, recognize a touch signal on a touchscreen in a first scanning mode (mutual capacitance mode of paragraph 0029); in response to a second scanning instruction, determine whether the touch signal of the touchscreen has a corresponding ground signal in a second scanning mode (paragraph 0029 explains that the self-capacitance mode requires scanning a change to ground); and in response to a trigger area of the touch signal meeting a preset condition (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition), and the touch signal corresponding to the ground signal (paragraph 0029 explains the scanning of change with respect to ground), determine the touch signal as a target signal (to determine the touch as given in paragraph 0029), the preset condition including a number of sensor nodes included in the trigger area being less than a preset number (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal that is the preset condition and the number of sensor nodes is the number of intersections of the channels). Yuan et al. does not specify that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle. Rosenberg teaches that the mutual capacitance mode and self-capacitance mode are within the same scanning cycle (paragraphs 0012 and 0014 explain that the scan cycle has a touch segment where mutual-capacitance is used and a stylus segment where self-capacitance is used). It would be obvious to one of ordinary skill in the art before the effective filing date to allow both mutual-capacitance detection and self-capacitance detection in the same scanning cycle. The rationale to combine would be to track multiple types of input such as both touch and stylus inputs across the touch sensor surface (paragraph 0014 of Rosenberg). Regarding claim 14, Yuan et al. teaches the device according to the first scanning mode is mutual capacitance scanning, and the second scanning mode is self-capacitance scanning (paragraph 0029 describes these two modes). Regarding claim 15, Rosenberg teaches further the device according to claim 13, wherein within the scanning cycle, in response to a scanning instruction, the one or more processors are further configured to: execute the first scanning mode and the second scanning mode in sequence (paragraph 0016 explains that the detection is done in mutual-capacitance mode and then self-capacitance mode); or execute the second scanning mode and the first scanning mode in sequence. Regarding claim 16, Yuan et al. teaches the device according to claim 13, wherein: the touchscreen includes a plurality of horizontal sensor lines and a plurality of vertical sensor lines (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system); each of the horizontal sensor lines and each of the vertical sensor lines are connected to a ground line and have a capacitance with the ground line (figure 1 depicts the situation of paragraph 0029 with the horizontal and vertical two-layer channels of the touch system each being connected to ground to have a capacitance in the self-capacitance mode to ground); and an intersection of a horizontal sensor line and a vertical sensor line is a sensor node (paragraph 0029 explains how the touch is determined based on the intersection of the TX and RX such that the intersection is the node). Regarding claim 17, Yuan et al. teaches the device according to claim 16, wherein the one or more processors is further configured to (in the self-capacitance mode described in paragraph 0029): in response to the second scanning instruction, detect a capacitance value of a capacitance corresponding to each sensor line of the horizontal sensor lines and the vertical sensor lines (paragraphs 0029-0030 explain that in a self-capacitance mode, the capacitance is sensed of the horizontal and vertical channels by the capacitance detection system 223 of figure 2); in response to detecting a change in the capacitance value compared to a reference capacitance value, determine that the sensor line corresponding to the capacitance has the ground signal (paragraph 0029 explains how the change in capacitance value is scanned relative to ground based on the connection shown to ground in figure 1 where the reference value is the ground value, as also described in paragraph 0053); and in response to at least one sensor line corresponding to the touch signal having a ground signal, determine that the touch signal has the corresponding ground signal (figure 1 shows that each of the channels is connected to ground to be compared to the change to determine touch as given in paragraph 0029). Regarding claim 19, Rosenberg teaches further the device according to claim 13, wherein the one or more processors are further configured to: in response to a first operation mode start instruction, detect the target signal in the first scanning mode (paragraphs 0012 and 0014 and 0016 explain the different modes used that have different instructions); and in response to a second operation mode start instruction, detect the target signal in the first scanning mode and the second scanning mode (paragraphs 0012 and 0014 and 0016 explain the different modes used that have different instructions). Regarding claim 20, Rosenberg teaches further the device according to claim 19, wherein the one or more processors are further configured to: in response to a current operation mode being not a second operation mode, and detecting that a change amount of the capacitance value is smaller than a threshold, issue the second operation mode start instruction; or obtain the second operation mode start instruction through a user interface (paragraphs 0012 and 0014 and 0016 explain how the start instructions are based on timing and being next, which is set up through a user interface). Regarding claim 21, Yuan et al. teaches the method according to claim 1, wherein the preset number is determined based on a size of a stylus tip (paragraph 0030 explains how the receipt of signals causes the generation of a trigger signal and the number of sensor nodes is the number of intersections of the channels where the number of intersections is based on the size of the touch point, or stylus tip, with the channels). Response to Arguments Applicant's arguments filed 2/2/26 have been fully considered but they are not persuasive. Applicant contends that the amendments render the claims to be allowable as Yuan fails to disclose or suggest a trigger area and a number of sensor nodes included in the trigger area. The examiner disagrees. As explained above, the number of sensor nodes is the number of intersections of the channels as given in paragraph 0030 of Yuan. The trigger is based upon the signals described as triggering in paragraph 0030 to be the trigger area. Further clarifications must be provided to differentiate over the teachings of Yuan. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The closest prior art is made of record in the attached notice of references cited. THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PARUL H GUPTA whose telephone number is (571)272-5260. The examiner can normally be reached Monday through Friday, from 10 AM to 7 PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Ke Xiao can be reached at 571-272-7776. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /PARUL H GUPTA/Primary Examiner, Art Unit 2627
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Prosecution Timeline

Mar 22, 2025
Application Filed
Nov 01, 2025
Non-Final Rejection — §103
Feb 02, 2026
Response Filed
Feb 21, 2026
Final Rejection — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
61%
Grant Probability
94%
With Interview (+33.0%)
2y 11m
Median Time to Grant
Moderate
PTA Risk
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