Prosecution Insights
Last updated: August 17, 2026
Application No. 19/015,429

METHOD FOR PRESSURE RELIEF AND PERMEABILITY IMPROVEMENT ON THE BASIS OF HORIZONTAL SLITTING OF COAL SEAM UNDER THE ACTION OF PERIODIC WEIGHTING

Non-Final OA §112
Filed
Jan 09, 2025
Priority
Nov 19, 2024 — CN 202411661197.3
Examiner
KRECK, JANINE MUIR
Art Unit
3672
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Guizhou Yihe Mining Co. Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
1051 granted / 1346 resolved
+26.1% vs TC avg
Moderate +14% lift
Without
With
+13.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
22 currently pending
Career history
1368
Total Applications
across all art units

Statute-Specific Performance

§101
2.3%
-37.7% vs TC avg
§103
39.7%
-0.3% vs TC avg
§102
20.5%
-19.5% vs TC avg
§112
23.5%
-16.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1346 resolved cases

Office Action

§112
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 . Applicant’s reply to the rule 105 requirement is acknowledged. Claim 1 is 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. Claim 1 is indefinite regarding the “the roof weighting step distance historically collected” because it is not clear how this relates to the previously measured roof weighting step distance—is the “historically collected” distance limited to the distance measured in the “measuring” step? Similarly, claim 1 is indefinite regarding the limitation “the weighting cycle, the weighting step distance and a periodic weighting peak during historical stoping” because it is not clear how the historical stoping is related to the real-time measurements. Claim 1 is indefinite regarding the “selecting a coalface on one side of an advancing stress concentration zone during the weighting cycle” because it is not clear if this “weighting cycle” refers to the predicted cycle or some other cycle. Claim 1 is indefinite regarding “advancing the drilling to reach an initial slitting position” because this implies more drilling even though the previous step called for replacing the drill with a slitting device. It is not clear if the claim requires deeper drilling using the slitting device. Claims 2 and 4 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. These claims are indefinite by dependency from claim 1. Claims 1, 2, and 4 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Janine M KRECK whose telephone number is (571)272-7042. The examiner can normally be reached telework: M-F 0600-1530 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, Nicole Coy can be reached at 5712725405. 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. /Janine M Kreck/Primary Examiner, Art Unit 3672
Read full office action

Prosecution Timeline

Jan 09, 2025
Application Filed
Jul 23, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12692676
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2y 8m to grant Granted Jul 28, 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
78%
Grant Probability
92%
With Interview (+13.6%)
2y 3m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1346 resolved cases by this examiner. Grant probability derived from career allowance rate.

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