Office Action Predictor
Last updated: April 16, 2026
Application No. 18/441,434

ROTATION DETECTION DEVICE AND STYLUS PEN

Non-Final OA §103
Filed
Feb 14, 2024
Examiner
CAROC, LHEIREN MAE ANGLO
Art Unit
2831
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Alps Alpine Co., LTD.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
92%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
769 granted / 990 resolved
+9.7% vs TC avg
Moderate +14% lift
Without
With
+14.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
33 currently pending
Career history
1023
Total Applications
across all art units

Statute-Specific Performance

§103
40.7%
+0.7% vs TC avg
§102
42.2%
+2.2% vs TC avg
§112
13.2%
-26.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 990 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 Objections Claim 2 is objected to because “in the both” on line 7 should be changed to “in both”. Appropriate correction is required. Claim Rejections - 35 USC § 103 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, 7, and 10 are rejected under 35 U.S.C. 103 as being unpatentable over Simsir et al. [Simsir hereinafter, WO 2019/209213] in view of Li [US 2010/0329500]. In regard to claim 1, Simsir discloses [in figs. 1-4] a rotation detection device comprising: an operation member [2] having an annular shape and configured to be rotatable about a rotation center axis; a base member [1] disposed within the operation member; a switch [3 on the right] that detects a rotation as the operation member [2] rotates and disposed on the base member [1]; and a returning mechanism [5 on the left] configured to return the operation member [2] to an initial position by an elastic force, wherein the returning mechanism is provided within the operation member [2], and is located opposite to the sensor with the rotation center axis interposed between the returning mechanism and the sensor. Simsir does not disclose a switch configured to be pressed as the operation member rotates such that a rotation direction of the operation member coincides with a pressing direction. Li teaches [in Figs. 2-4] a switch [220, 320, 420] configured to be pressed as the operation member [20] rotates such that a rotation direction of the operation member [20] coincides with a pressing direction. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to replace the switch of Simsir with the switch of Li in order to provide a user with the desired tactile feedback. In regard to claim 5, Simsir discloses some of the limitations of the rotation detection device according to claim 1, wherein the operation member is rotatable in one direction about the rotation center axis, and the switch is configured to detect rotation of the operation member in the one direction. In regard to claim 7, Simsir discloses some of the limitations of the rotation detection device according to claim 1, wherein the switch is configured to provide a clicking sensation [via 4]. In regard to claim 10, Simsir discloses some of the limitations of the rotation detection device according to claim 1. Simsir does not disclose that an outer surface of the operation member is subjected to antislip treatment. Li teaches [in Figs. 1 and 2] that an outer surface of the operation member [20] is subjected to antislip treatment [40, 50, 60]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention combine the antislip treatment of Li with the device of Simsir in order to provide the user with the desired ease of use. Claims 8, 9, and 11 are rejected under 35 U.S.C. 103 as being unpatentable over Simsir et al. [Simsir hereinafter, WO 2019/209213] in view of Li [US 2010/0329500] further in view of Chiang et al. [Chiang hereinafter, US 2018/0224954]. In regard to claims 8 and 9, Simsir and Li teach the rotation detection device according to claim 1. Simsir and Li do not teach that the rotation detection device is installable on an end portion of a body of a stylus pen, wherein an outer diameter of the operation member is substantially equal to an outer diameter of the body of the stylus pen. Chiang teaches [in Figs. 2-5] a similar rotation detection device [2, 3] is installable on an end portion of a body [11] of a stylus pen, wherein an outer diameter of the operation member [2] is substantially equal to an outer diameter of the body [11] of the stylus pen. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention combine the rotation detection device of Simsir, as modified by Li, with the stylus pen of Chiang in order to easily control an electronic device [Chiang, Abstract]. In regard to claim 11, Simsir and Li teach the rotation detection device of claim 1. Simsir and Li do not teach a stylus pen comprising a body and the rotation detection device installed on an end portion of the body. Chiang teaches [in Figs. 2-5] a stylus pen comprising a body [11] and a similar rotation detection device [2,3] installed on an end portion of the body [11]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention combine the rotation detection device of Simsir, as modified by Li, with the stylus pen of Chiang in order to easily control an electronic device [Chiang, Abstract]. Allowable Subject Matter Claims 2-4 and 6 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. In regard to claim 2, in combination with other limitations, the switch including a pair of switches, the operation member being rotatable in both directions about the rotation center axis, and the pair of switches configured to detect rotation of the operation member in both directions is neither disclosed nor suggested by the prior art. In regard to claim 6, in combination with other limitations, the returning mechanism includes a cam member disposed within the operation member and having a cam lobe axially oriented along the rotation center axis, an elastic member configured to preload the cam member in an axial direction of the rotation center axis, and a contact portion disposed within the operation member, integrated with the operation member, facing the cam lobe of the cam member, and configured to return the operation member to the initial position upon the cam lobe contacting the contact portion. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LHEIREN MAE A CAROC whose telephone number is (571)272-2730. The examiner can normally be reached Monday-Friday, 9:00am-5:00pm. 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, Renee Luebke can be reached at 571-272-2009. 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. /LHEIREN MAE A CAROC/Primary Examiner, Art Unit 2833
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Prosecution Timeline

Feb 14, 2024
Application Filed
Jan 09, 2026
Non-Final Rejection — §103
Mar 31, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603237
PUSH BUTTON FOR ACTUATING SWITCH
2y 5m to grant Granted Apr 14, 2026
Patent 12597571
BUTTON APPARATUS AND ELECTRONIC EQUIPMENT
2y 5m to grant Granted Apr 07, 2026
Patent 12592351
PYROTECHNIC CIRCUIT BREAKER
2y 5m to grant Granted Mar 31, 2026
Patent 12586740
STACK KEY STRUCTURE AND BALANCE-SHAFT SEAT THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12578802
ELECTRICAL KEY SUPPORT MEMBRANE
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
78%
Grant Probability
92%
With Interview (+14.5%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 990 resolved cases by this examiner. Grant probability derived from career allow rate.

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