Prosecution Insights
Last updated: April 19, 2026
Application No. 18/428,602

Detection Device and Rotation Detecting Method for the Crown of Smart Watch

Non-Final OA §112
Filed
Jan 31, 2024
Examiner
COLLINS, JASON M
Art Unit
2831
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Maxic Technology Incorporated
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
87%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
380 granted / 510 resolved
+6.5% vs TC avg
Moderate +13% lift
Without
With
+12.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
12 currently pending
Career history
522
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
46.4%
+6.4% vs TC avg
§102
29.8%
-10.2% vs TC avg
§112
19.1%
-20.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 510 resolved cases

Office Action

§112
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 § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 1 and 5 recite the limitation “eliminating a misrotation angle from the measured rotation angle to obtain a true rotation angle corresponding to the rotation action, and taking the true rotation angle as a detection result.” This limitation is indefinite because the scope of “misrotation” and “true rotation” are unascertainable. The specification on page 5 lines 20-30 discusses correcting the “misrotation” of a crown as a result of jittering or shaking of the crown. However, it is not made clear how the invention distinguishes misrotation from true rotations. The specification further discusses a 0.5 second time frame during which “when the pressing action on the key is detected first, and the rotation angle of the shaft is not identified in the process of pressing the key (for example, within 0.5 seconds when detecting change in the key state), the misrotation caused to the shaft in the process of pressing the key can be avoided from being identified.” For purposes of examination misrotation angle will be interpreted to mean a first rotation angle detected within a set period of time after a pressing operation and a true rotation angle to be a second rotation angle not including the first rotation angle to determine the detection result. Claims 2-4 and 6-20 are rejected for inheriting the deficiency of the claims they depend from. Claims 2, 3, 17 and 18 are further rejected because “the misrotation threshold” lacks proper antecedent basis and because the limitation “the ratio detected each time within the set period of time is randomly distributed within a range with an absolute value less than 1” is unclear. What is the scope of “random distribution” in this context? It appears to be any ratio between -1 and +1 but the first part of the claim already states this. Therefore, the claimed scope is unascertainable. Claim 6 is further rejected because “the side surface” lacks antecedent basis. Claim 7 is further rejected because “the light emission unit” and “the light reception unit” lack antecedent basis. This claim appears to be incorrectly dependent on claim 5, when depending from claim 6 would give proper antecedent basis. Claim 12 is further rejected because it is not apparent what a “specific shape” entails. For purposes of examination this will be interpreted to mean any shape. Claim 13 is further rejected because “the key state” and “the key” lack antecedent basis. Allowable Subject Matter Claims 1-20 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 1, the prior art fails to disclose or reasonably suggest the claimed invention of a rotation detecting method for a crown, wherein operations on the crown comprise a pressing action and a rotation action, and the method comprises: including detecting, within a set period of time when the pressing action is identified, a rotation angle of the crown to obtain a measured rotation angle; and eliminating a eliminating a misrotation angle from the measured rotation angle to obtain a true rotation angle corresponding to the rotation action, and taking the true rotation angle as a detection result. Regarding claim 5, the prior art fails to disclose or reasonably suggest the claimed invention particularly including a detection device for the crown of a smart watch, wherein operations on the crown comprise a pressing action and a rotation action, and the detection device comprises: an angle measuring module, configured to detect a rotation angle of the crown to obtain a measured rotation angle; a pressing detection module, configured to detect a pressing action on the crown; and a rotation detection module, connected to the angle measuring module and the pressing detection module, and configured to eliminate, within a set period of time when the pressing action is identified, a misrotation angle from the measured rotation angle to obtain a true rotation angle corresponding to the rotation action, which is taken as a detection result. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JASON COLLINS whose telephone number is (571)270-3994. The examiner can normally be reached 9:30 AM - 6:00 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, 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. /JASON M COLLINS/ Examiner, Art Unit 2831 /EDWIN A. LEON/ Primary Examiner, Art Unit 2831
Read full office action

Prosecution Timeline

Jan 31, 2024
Application Filed
Apr 03, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

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Patent 12591207
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2y 5m to grant Granted Mar 24, 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
74%
Grant Probability
87%
With Interview (+12.9%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 510 resolved cases by this examiner. Grant probability derived from career allow rate.

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