Prosecution Insights
Last updated: October 02, 2026
Application No. 17/615,969

SAFETY CABINET

Non-Final OA §102
Filed
Feb 15, 2024
Priority
Jun 15, 2021 — nonprovisional of PCTJP2021022743
Examiner
SHIRSAT, VIVEK K
Art Unit
Tech Center
Assignee
Hitachi Ltd.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
828 granted / 1117 resolved
+14.1% vs TC avg
Strong +28% interview lift
Without
With
+28.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
47 currently pending
Career history
1142
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
48.7%
+8.7% vs TC avg
§102
21.9%
-18.1% vs TC avg
§112
23.8%
-16.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1117 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 . 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) 1-2 and 4 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Bayern (US 3,408,914). With respect to claim 1 Bayern discloses a safety cabinet comprising: a work room [reference character 24] formed inside a front shutter [reference character 50], the safety cabinet suctioning air in the work room, cleaning the air, supplying the air to the work room in part, and exhausting the air in part; a workbench [reference character 12] configuring a bottom surface of the work room; a lower flow path [see annotated Fig. below] configured by the workbench and a part of the safety cabinet; a side flow path [see annotated Fig. below] configured by a side surface of the work room and a part of a side surface of the safety cabinet; a back flow path [see annotated Fig. below] configured by a back surface of the work room and a part of a back surface of the safety cabinet; a circulation flow path formed by at least the lower flow path, the side flow path, and the back flow path; and a slit [reference characters 90 and 92]- in the side surface of the work room [see Figs. 3-4], wherein an airstream from the work room is suctioned from side slits, passes through a side chamber, and joins the lower flow path [see Fig. 5]. PNG media_image1.png 570 925 media_image1.png Greyscale With respect to claim 2 Bayern discloses a side chamber [reference characters 78 and 82] allowing the airstream suctioned from the side slit to flow to the lower flow path, wherein the side chamber and the lower flow path have the same pressure [since the airflows originate from the same source, they are assumed to have the same pressure]. With respect to claim 4 Bayern discloses that the side slit is provided at a position lower than height of a device [reference character 116] installed in the work room. Allowable Subject Matter Claims 3 and 5-6 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to VIVEK K SHIRSAT whose telephone number is (571)272-3722. The examiner can normally be reached M-F 9:00AM-5:20AM. 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, Helena Kosanovic can be reached at 571-272-9059. 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. /VIVEK K SHIRSAT/Primary Examiner, Art Unit 3762
Read full office action

Prosecution Timeline

Feb 15, 2024
Application Filed
Jul 22, 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
74%
Grant Probability
99%
With Interview (+28.1%)
2y 11m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1117 resolved cases by this examiner. Grant probability derived from career allowance rate.

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