Prosecution Insights
Last updated: April 19, 2026
Application No. 18/138,173

PLANT STATE DETECTION SYSTEM AND GAS DETECTOR

Non-Final OA §103
Filed
Apr 24, 2023
Examiner
KOLB, NATHANIEL J
Art Unit
2896
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Sintokogio Ltd.
OA Round
3 (Non-Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
2y 11m
To Grant
98%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
374 granted / 603 resolved
-6.0% vs TC avg
Strong +36% interview lift
Without
With
+36.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
34 currently pending
Career history
637
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
45.2%
+5.2% vs TC avg
§102
21.1%
-18.9% vs TC avg
§112
26.9%
-13.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 603 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 . Summary Claims 1-3 are pending. Claims 1-3 are rejected herein. This is a Non-Final Rejection after the amendment, arguments, and Request for Continued Examination (hereinafter “the Response”) 28 Jan 2026. 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. 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) 1 and 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over WEI (US 20220236242) in view of TEMPLETON et al. (US 6306620) and TOMII et al. (US 20160063420). Regarding claim 1: WEI discloses: A plant state detection system (abstract) comprising: a plurality of gas detectors (100 in FIG. 1 including sensing elements 106-1A-106-1K in FIG. 4A) configured to be arranged at equal intervals in a cultivation area in which plants are cultivated (This is a statement of intended use and does limit the structure of the claimed invention.), each gas detector including a gas detection unit (sensing elements 106-1A-106-1K in FIG. 4A) configured to detect gas emitted from a plant (para. 51); a container configured to accommodate the gas detection unit (The housing of receiver 106 best seen in FIG. 1), and a suction machine (micropump 130 in FIG. 7) configured to suck air around the plant into the container (para. 71) and a plant state detector configured to acquire gas information detected by the gas detection unit (Camera 118 detects color change in sensors 106-1-106-K as described in para. 51. Other means of state detection such as electrical are also discussed in para. 66.) and detect a state of the plant based on the gas information (para. 5, 34-35), wherein the gas detection unit detects one or both of leaf alcohol and leaf aldehyde as the gas, IUPAC name of the leaf alcohol is cis-3-hexen-1-ol or trans-2-hexen-1-ol, IUPAC name of the leaf aldehyde is trans-2-hexenal or cis-3-hexenal (para. 57), and wherein the plant state detector includes a display control unit (mobile device S in FIG. 3; para. 51), and the display control unit is configured to display the state of the plant corresponding to arrangement positions of the plurality of gas detectors (para. 35). WEI discloses using detection of VOCs to determine “the presence of disease, contamination, pest infestation or other stress condition” (para. 14, emphasis added), but does not specify that one of those other stress conditions is temperature stress. TEMPLETON however does teach detecting volatile gas from plants to determine temperature stress (col. 1 lines 27-40, col. 4 lines 19-36). One skilled in the art at the time the application was effectively filed would be motivated to determine temperature stress from outgassed VOCs as taught by TEMPLETON with the gas sensors of WEI because temperature stresses can affect plants future growth potential, but not be immediately apparent from visual inspection (col. 1 lines 26-40 of TEMPLETON). WEI does not disclose a plurality of gas detectors at equal intervals in a plant cultivation area. TOMII however does teach a plant cultivation area (FIG. 1) with many plants (15) and evenly spaced monitoring apparatuses (14), wherein each monitoring apparatus has a gas detector (CO2 sensor 1404 in FIG. 3A). One skilled in the art at the time the application was effectively filed would be motivated to use multiple VOC sensors of the type taught by WEI and evenly space them over a plant cultivation area as taught by TOMII so that plant pathogens can be diagnosed from volatile emissions (abstract of WEI) while an extended area of farmland is being managed (para. 45 of TOMII). Regarding claims 2: WEI does not specify detecting carbon dioxide or ethylene. TEMPLETON however does teach measuring ethylene (col. 8 lines 35-43; FIG. 14) outgassed from plants (abstract), through a color change process (abstract). One skilled in the art at the time the application was effectively filed would be motivated to detect the presence or concentration of ethylene as a Volatile Organic Compound (VOC) from plants as taught by TEMPLETON because it is associated with ripeness, readiness for harvest, palatability and nutritional quality (col. 13 lines 50-65 of TEMPLETON) making it valuable data to collect for anyone evaluating plants to be used as food. Claim(s) 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over WEI, TEMPLETON and TOMII in view of RAMASAMY et al. (US 20180142277). Regarding claims 3: Although WEI discloses electrical detection in para. 66, they do not specify that the gas detection unit includes a semiconductor gas sensor using a metal oxide as a sensor configured to detect leaf alcohol or leaf aldehyde. RAMASAMY however does teach semiconductor sensor using metal oxide (FIG. 5A; col. 18 lines 52-67) on their system for detecting plant VOCs to detect pathogens (abstract). One skilled in the art at the time the application was effectively filed would be motivated to use a metal oxide sensor as taught by RAMASAMY as the sensor for WEI, because “106) Metal oxide (MOx) nanomaterials are inexpensive alternative to precious metals (Au, Ag or Pt), and offer many characteristics desirable for electrochemical sensor applications, at a fraction of the cost. Metal oxides have been reported to act as good catalysts for dehydrogenation and/or decomposition of VOCs such as aliphatic alcohols, ketones, acetic acid, etc. By varying their shape and size, one can control their chemical adsorption properties” (col. 18 lines 52-67 of RAMASAMY). Response to Amendment/Argument The Applicant has argued (page 3 of the Response) that the most recent amendment distinguishes over WEI because WEI does not teach every limitation in claim 1. This argument is moot as WEI is no longer relied upon to teach all of the limitations of claim 1. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to NATHANIEL J KOLB whose telephone number is (571)270-7601. The examiner can normally be reached M-F 9-5 EST. 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, JESSICA HAN can be reached at (571) 272-2078. 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. /NATHANIEL J KOLB/Examiner, Art Unit 2896
Read full office action

Prosecution Timeline

Apr 24, 2023
Application Filed
Jun 13, 2025
Non-Final Rejection — §103
Sep 17, 2025
Response Filed
Oct 27, 2025
Final Rejection — §103
Jan 28, 2026
Request for Continued Examination
Feb 03, 2026
Response after Non-Final Action
Mar 07, 2026
Non-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
62%
Grant Probability
98%
With Interview (+36.4%)
2y 11m
Median Time to Grant
High
PTA Risk
Based on 603 resolved cases by this examiner. Grant probability derived from career allow rate.

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