Prosecution Insights
Last updated: August 17, 2026
Application No. 18/474,911

RATE LIMITING DEVICE TO ENHANCE THE PERFORMANCE RATIO AND LONGEVITY OF A WELLBORE INFLOW CONTROL DEVICE

Non-Final OA §112
Filed
Sep 26, 2023
Examiner
AKARAGWE, YANICK A
Art Unit
3672
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Halliburton Energy Services Inc.
OA Round
5 (Non-Final)
83%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
460 granted / 552 resolved
+31.3% vs TC avg
Moderate +12% lift
Without
With
+12.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
26 currently pending
Career history
577
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
50.2%
+10.2% vs TC avg
§102
25.0%
-15.0% vs TC avg
§112
20.2%
-19.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 552 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 . Response to Arguments Applicant’s arguments, filed on 05/18/2026, with respect to the rejection(s) of claim(s) 1, 9, and 16 over Greci et al. (U.S. 2020/0040676A1), in view of Hammer (U.S. 2009/0283275A1) have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. See the rejection below. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Regarding claims 1, 9, 16: claims 1, 9, and 16 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, for lack of written description. The claims have been amended to recite that “an increase in differential pressure across the pressure-responsive variable choke of the flow control tool results in a corresponding increase in flow restriction at the pressure-responsive variable choke”. The originally-filed specification does not reasonably convey to one of ordinary skill in the art that applicant was in possession of this specific relationship between differential pressure across the pressure-responsive variable choke and a corresponding increase in flow restriction at the choke at the tome of filing. While the specification may disclose differential pressure and regulation of flow, the specification flails to describe the newly claimed functional relationship whereby an increase in differential pressure across the choke results in a corresponding increase in flow restriction. Therefore, the amendment introduces subject matter that lacks adequate written descriptive support in the originally-filed disclosure. Claims 2-8, 10-15, and 17-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as being dependent on rejected claims 1, 9, and 16. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to YANICK A AKARAGWE whose telephone number is (469)295-9298. The examiner can normally be reached M-TH 7:30-5:30. 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 on (571) 272-5405. 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. /YANICK A AKARAGWE/Primary Examiner, Art Unit 3672
Read full office action

Prosecution Timeline

Show 9 earlier events
Nov 18, 2025
Response after Non-Final Action
Nov 25, 2025
Non-Final Rejection mailed — §112
Feb 09, 2026
Response Filed
Mar 30, 2026
Final Rejection mailed — §112
May 18, 2026
Response after Non-Final Action
May 27, 2026
Request for Continued Examination
May 29, 2026
Response after Non-Final Action
Jun 10, 2026
Non-Final Rejection mailed — §112 (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

5-6
Expected OA Rounds
83%
Grant Probability
96%
With Interview (+12.2%)
2y 3m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 552 resolved cases by this examiner. Grant probability derived from career allowance rate.

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