Prosecution Insights
Last updated: October 02, 2026
Application No. 17/938,690

CHANNEL WIDTH CONTROL FOR MULTI-ZONE MICROREACTOR FLOW FIELDS

Non-Final OA §102
Filed
Oct 07, 2022
Examiner
NGUYEN, HUY TRAM
Art Unit
2187
Tech Center
2100 — Computer Architecture & Software
Assignee
Toyota Motor Corporation
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
597 granted / 753 resolved
+24.3% vs TC avg
Moderate +7% lift
Without
With
+6.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
12 currently pending
Career history
766
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
48.5%
+8.5% vs TC avg
§102
24.0%
-16.0% vs TC avg
§112
16.0%
-24.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 753 resolved cases

Office Action

§102
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 Applicant’s election without traverse of Group I, Claims 1-14 in the reply filed on May 19, 2026 is acknowledged. Claim Rejections - 35 USC § 102 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- is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lavric et al. (US Patent No. 7,939,033 B2). Regarding Claim 1, Lavric et al. reference discloses a microreactor, comprising: a fluid flow field having an inlet region, an outlet region, and a reaction region defined by a plurality of reaction region zones fluidically connected to the inlet region and the outlet region (Figure 3, A, B, numerals 26 – inlet region, 30, F1, F2 – reaction region zones and C – outlet region). Regarding Claim 6, Lavric et al. reference discloses the microreactor of claim 1, wherein each reaction zone in the reaction region zones comprises a plurality of microchannels has spatially-varying third channel widths (Figure 3, numerals 34, 36, 38, 42, 44, and 46). Regarding Claim 7, Lavric et al. reference discloses the microreactor of claim 6, wherein the third channel widths correspond to a predefined fluid flow resistance performance objective through the reaction region (Figure 3, numerals 34, 36, 38, 42, 44, and 46). Allowable Subject Matter Claims 8-14 are allowed. Claims 2-5 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. The following is a statement of reasons for the indication of allowable subject matter: Regarding Claim 2, Lavric et al. (US Patent No. 7,939,033 B2) the microreactor of claim 1 except for the inlet region is defined by a first zone that comprises a plurality of microchannels having spatially-varying first channel widths. There is no motivation/suggestion to modify the microreactor with a plurality of microchannels having spatially-varying first channel widths in the inlet region. Claim 3 directly depends on Claim 2. Regarding Claim 4, Lavric et al. (US Patent No. 7,939,033 B2) the microreactor of claim 1 except for the outlet region is defined by a second zone that comprises a plurality of microchannels having spatially-varying second channel widths. There is no motivation/suggestion to modify the microreactor with a plurality of microchannels having spatially-varying first channel widths in the outlet region. Claim 5 directly depends on Claim 4. Regarding Claim 8, Lavric et al. (US Patent No. 7,939,033 B2) a microreactor, comprising: a fluid flow field having a plurality of zones that define an inlet region, an outlet region, and a reaction region (Figure 3, A, B, numerals 26 – inlet region, 30, F1, F2 – reaction region zones and C – outlet region). However, Lavric et al. does not disclose a first buffer region to facilitate a fluid flow transition at a fluidic interface between zones of different channel widths at the inlet region and the reaction region, and a second buffer region to facilitate a fluid flow transition at a fluidic interface between zones of different channel widths at the reaction region and the outlet region. There is no motivation/suggestion to modify the microreactor with the claimed first and second buffer regions. Claims 9-14 directly or indirectly depend on Claim 8. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HUY-TRAM NGUYEN whose telephone number is (571)270-3167. The examiner can normally be reached M-W, 7:00am - 3pm, 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, Claire X Wang can be reached at 571-270-1051. 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. /HUY TRAM NGUYEN/ Examiner, Art Unit 1774
Read full office action

Prosecution Timeline

Oct 07, 2022
Application Filed
Sep 24, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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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
79%
Grant Probability
86%
With Interview (+6.6%)
2y 6m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 753 resolved cases by this examiner. Grant probability derived from career allowance rate.

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