Prosecution Insights
Last updated: April 19, 2026
Application No. 18/422,024

SMOKE DETECTOR WITH ANTI-INSECT FUNCTION AND SPOILER FUNCTION

Non-Final OA §102§103
Filed
Jan 25, 2024
Examiner
HUNNINGS, TRAVIS R
Art Unit
2689
Tech Center
2600 — Communications
Assignee
Pixart Imaging Inc.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
96%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
930 granted / 1123 resolved
+20.8% vs TC avg
Moderate +13% lift
Without
With
+13.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
27 currently pending
Career history
1150
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
47.6%
+7.6% vs TC avg
§102
25.2%
-14.8% vs TC avg
§112
10.0%
-30.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1123 resolved cases

Office Action

§102 §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 . Election/Restrictions In the response dated 1/2/2026, applicant has elected Group I, claims 1-9, without traverse. The restriction is hereby made FINAL. Claim Rejections - 35 USC § 102 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 the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1, 6, 7, 8, 9 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Takano (US 20210041350). Regarding claim 1, A smoke detector with an anti-insect function comprising: a substrate, having a ring shape region surrounding a central detection region, and a first block structure of the central detection region being protruded from the substrate and higher than an upper surface of the ring shape region; a top cover having a lateral wall; a base disposed on the substrate and connected with the top cover and adapted to cover the optical detection module, the base having a second block structure partly overlapped with the lateral wall to form a guiding channel; (“The fire detection apparatus 1A is installed on an installation surface 2A on a lower surface of a ceiling portion of a building in an interior of the building, and includes an attachment base 10A, an outer cover 20A, an inner cover 30A, an inflow space 40A, an insect screen 50A, a detection space 60A, a detector cover 70A, a detector body 80A, a terminal board 90A, and a substrate 100A as illustrated in FIG. 1 to FIG. 3.” Takano: paragraph 79 & Figures 1-4) an optical detection module disposed inside the central detection region; (“In Embodiment 1, installation is performed to be able to avoid direct reception of the first detection light or the second detection light irradiated from the first light emitting unit or the second light emitting unit through various optical path holes of the detector body 80A. For example, the first light emitting unit and the light receiving unit are installed at positions at which an angle between an optical axis of the first light emitting unit (hereinafter referred to as a “first light emitting-side optical axis”) and an optical axis of the light receiving unit (hereinafter referred to as a “light receiving-side optical axis”) is about 135°.” Takano: paragraph 106) and a perforated plate disposed between the lateral wall and the second block structure and adapted to prevent an insect from moving into the top cover through the guiding channel. (“The insect screen 50A is a net for preventing insects present outside the fire detection apparatus 1A from intruding into the detection space 60A. The insect screen 50A is configured using a flat plate-shaped net (for example, a circular net), and is attached to the detector cover 70A as illustrated in FIG. 3.” Takano: paragraph 97 & Figure 3) Regarding claim 6, The smoke detector of claim 1, wherein the top cover further comprises a cover body connected to the lateral wall, the lateral wall and the cover body both have an airtight feature, and the perforated plate is attached to a side of the lateral wall opposite to the cover body. (Takano: figure 1) Regarding claim 7, The smoke detector of claim 1, wherein the smoke detector further comprises a plurality of connection ribs, two opposite ends of each of the plurality of connection ribs are connected to an inner surface of the base and an outer surface of the top cover respectively, and the perforated plate is attached to the plurality of connection ribs. (Takano: figure 1) Regarding claim 8, The smoke detector of claim 1, wherein the perforated plate is connected to the top cover and the base in a monolithically integrated manner. (Takano: figures 3 & 4) Regarding claim 9, The smoke detector of claim 1, wherein the perforated plate is disposed between the top cover and the base in a detachable manner. (“Next, with regard to a second feature of the attachment structure, the insect screen 50A, the first opening 30aA, and the detector cover 70A are configured such that the insect screen 50A can be detachably attached to the detector cover 70A through the first opening 30aA” Takano: paragraph 119) 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. Claim(s) 2, 3, 4, 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Takano in view of Sakurai (US 6195014). Regarding claim 2, The smoke detector of claim 1, wherein the perforated plate is a ring-typed structure, an inner edge of the ring-typed structure corresponds to the lateral wall, an outer edge of the ring-typed structure corresponds to the second block structure, (“The insect screen 50A is a net for preventing insects present outside the fire detection apparatus 1A from intruding into the detection space 60A. The insect screen 50A is configured using a flat plate-shaped net (for example, a circular net), and is attached to the detector cover 70A as illustrated in FIG. 3.” Takano: paragraph 97 & Figure 3) The claimed a plurality of holes is formed on a plate body of the ring-typed structure set between the inner edge and the outer edge is not specifically disclosed by Takano. Sakurai discloses a smoke detector that teaches using fine holes in an insect screen (“The insect screen 12 comprises a number of fine holes as a net of meshes” Sakurai: column 7, lines 55-56). Modifying Takano to use fine holes in the insect screen would increase the capabilities of the system by providing means for smoke to be able to enter the detection chamber but still prevent insects from interfering. Therefore it would have been obvious to one of ordinary skill in the art before the effective filing date to modify Takano according to Sakurai. Regarding claim 3, The smoke detector of claim 2, wherein the central detection region comprises a sunken structure, the optical detection module is disposed inside the sunken structure, and a hollow area formed by the inner edge of the ring-typed structure corresponds to the optical detection module. (Takano: figure 3) Regarding claim 4, The smoke detector of claim 2, wherein the inner edge and the outer edge of the ring-typed structure respectively abuts against the lateral wall and the second block structure. (Takano: figure 3) Regarding claim 5, The smoke detector of claim 2, wherein a thickness of the plate body is greater than or equal to an aperture of each of the plurality of hole. (“The insect screen 12 comprises a number of fine holes as a net of meshes” Sakurai: column 7, lines 55-56) Conclusion Related Art: US 20060007010 A1 – smoke detector with interior structure US 20050134468 A1 – smoke detector with interior structure US 6522254 B1 – smoke detector with insect screening US 20020154018 A1 – smoke detector with interior structure US 20020084907 A1 – smoke detector with interior structure Any inquiry concerning this communication or earlier communications from the examiner should be directed to TRAVIS R HUNNINGS whose telephone number is (571)272-3118. The examiner can normally be reached M: 6-7:30a, 9:30a-4:45p, 8:30-10p; T: 6-7:30a, 12-4p, 7:30p-12a; W: 6-7:30a, 9:30a-4:45p; H: 6-7:30a, 8:15a-4:45p; F: 12:00-4:45p. 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, Davetta Goins can be reached at 571-272-2957. 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. /TRAVIS R HUNNINGS/ Primary Examiner, Art Unit 2689
Read full office action

Prosecution Timeline

Jan 25, 2024
Application Filed
Jan 14, 2026
Non-Final Rejection — §102, §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

1-2
Expected OA Rounds
83%
Grant Probability
96%
With Interview (+13.2%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1123 resolved cases by this examiner. Grant probability derived from career allow rate.

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