Prosecution Insights
Last updated: April 19, 2026
Application No. 17/211,522

FLUID INLET SLEEVES FOR IMPROVING FLUID FLOW IN EARTH-BORING TOOLS, EARTH-BORING TOOLS HAVING FLUID INLET SLEEVES, AND RELATED METHODS

Non-Final OA §102§Other
Filed
Mar 24, 2021
Examiner
RO, YONG-SUK
Art Unit
3676
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
BAKER HUGHES OILFIELD OPERATIONS LLC
OA Round
7 (Non-Final)
85%
Grant Probability
Favorable
7-8
OA Rounds
2y 6m
To Grant
93%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
1086 granted / 1272 resolved
+33.4% vs TC avg
Moderate +8% lift
Without
With
+7.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
25 currently pending
Career history
1297
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
31.2%
-8.8% vs TC avg
§102
35.0%
-5.0% vs TC avg
§112
24.3%
-15.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1272 resolved cases

Office Action

§102 §Other
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 . In view of the appeal brief filed on 10/7/2025, PROSECUTION IS HEREBY REOPENED. A new ground of rejection is set forth below. To avoid abandonment of the application, appellant must exercise one of the following two options: (1) file a reply under 37 CFR 1.111 (if this Office action is non-final) or a reply under 37 CFR 1.113 (if this Office action is final); or, (2) initiate a new appeal by filing a notice of appeal under 37 CFR 41.31 followed by an appeal brief under 37 CFR 41.37. The previously paid notice of appeal fee and appeal brief fee can be applied to the new appeal. If, however, the appeal fees set forth in 37 CFR 41.20 have been increased since they were previously paid, then appellant must pay the difference between the increased fees and the amount previously paid. A Supervisory Patent Examiner (SPE) has approved of reopening prosecution by signing below: Claim Objections Claim 20 is objected to because of the following informalities: “The method of claim 11” should be changed to –The method of claim 19--. Appropriate correction is required. Claim Rejections - 35 USC § 102 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 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, 4, 5, 9, 10, 11, 14, 15, 19, and 20 are rejected under 35 U.S.C. 102a1 as being anticipated by Goolsbee et al. (2525667 – Goolsbee). Goolsbee discloses an earth-boring tool, comprising: Re claim 1: a tool body 5 comprising at least one nozzle port 6 extending from an external surface to an internal fluid plenum (i.e., fig. 1); and at least one fluid inlet sleeve 9 (i.e., fig. 2) disposed within the at least one nozzle port of the tool body, the at least one fluid inlet sleeve comprising a hollow cylinder having an angled longitudinal end at least partially located within the internal fluid plenum of the tool body (i.e., figs. 1-2), the angled longitudinal end comprising at least one planar, longitudinal end surface of the fluid inlet sleeve, the at least one planar, longitudinal end surface defining a fluid entry plane of the fluid inlet sleeve, the at least one planar, longitudinal end surface oriented at an angle within a range from greater than 0 degrees to less than 90 degrees relative to a plane to which a longitudinal axis of the fluid inlet sleeve is normal (i.e., figs. 1-2). Re claim 4, the angle is within the range of about 30 degrees to about 60 degrees (i.e., figs. 1-2). Re claim 5, the angle is about 45 degrees (i.e., figs. 1-2). Re claim 9, a nozzle 7 disposed adjacent to the at least one fluid inlet sleeve 9 within the nozzle port 6 (i.e., fig. 1). Fig. 1 depicts the element 7 has size of bore reduced from top to bottom, thus it increases velocity of a fluid flow when the fluid passes through. Re claim 10, the tool body further comprises an alignment mark (i.e., surface of port 6) on an external surface of the tool body 5 and wherein the at least one fluid inlet sleeve 9 comprises an alignment recess (i.e., bore of the sleeve 9) formed in another longitudinal end of the at least one fluid inlet sleeve opposite the longitudinal end (i.e., fig. 2). Goolsbee discloses a fluid inlet sleeve, comprising: Re claim 11: a hollow cylinder 9 having an angled longitudinal end configured to be at least partially disposed within an internal fluid plenum of an earth-boring tool 5 (i.e., col. 1:6, “In boring well holes with rotary bits”), the angled longitudinal end comprising at least one surface, the at least one surface comprising a planar end surface of the fluid inlet sleeve 9 oriented at an angle within a range from 0 degrees to 90 degrees relative to a plane to which a longitudinal axis of the fluid inlet sleeve is normal (i.e., figs. 1-2), wherein the planar end surface of the fluid inlet sleeve lies within a fluid entry plane of the fluid inlet sleeve (i.e., fig. 2). Re claim 14, the angle is within the range of about 30 degrees to about 60 degrees (i.e., figs. 1-2). Re claim 15, the angle is about 45 degrees (i.e., figs. 1-2). Goolsbee discloses a method, comprising: Re claim 19: disposing a nozzle 7 (i.e., fig. 1) within a nozzle port 6 of a body 5 of the earth-boring tool , the nozzle port extending from an external surface of the body and an internal fluid plenum within the body; and disposing at least one fluid inlet sleeve 9 within the nozzle port of the body adjacent to the nozzle such that an angled longitudinal end of the at least one fluid inlet sleeve is at least partially located within the internal fluid plenum (i.e., figs. 1-2), the angled longitudinal end comprising at least one planar, longitudinal end surface of the fluid inlet sleeve oriented at an angle within a range from greater than 0 degrees and less than 90 degrees relative to a plane to which a longitudinal axis of the fluid inlet sleeve is normal (i.e., figs. 1-2), wherein the planar, longitudinal end surface of the fluid inlet sleeve lies within a fluid entry plane of the fluid inlet sleeve (i.e., fig. 2). Re claim 20, disposing at least one fluid inlet sleeve 9 comprises aligning the at least one fluid inlet sleeve within the nozzle port 6 by aligning an alignment recess (i.e., bore of the sleeve 9) formed in the at least one fluid inlet sleeve 9 with an alignment mark (i.e., surface of the port 6) formed in the external surface of the body of the earth-boring tool (i.e., fig, 2). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to YONG-SUK (PHILIP) RO whose telephone number is (571)270-5466. The examiner can normally be reached Monday-Friday 8:00-4:30. 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, Tara Schimpf can be reached at 571-270-7741. 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. /YONG-SUK (PHILIP) RO/Primary Examiner, Art Unit 3676
Read full office action

Prosecution Timeline

Mar 24, 2021
Application Filed
Jul 16, 2022
Non-Final Rejection — §102, §Other
Nov 22, 2022
Response Filed
Aug 12, 2023
Final Rejection — §102, §Other
Oct 13, 2023
Response after Non-Final Action
Nov 17, 2023
Request for Continued Examination
Nov 20, 2023
Response after Non-Final Action
Dec 12, 2023
Non-Final Rejection — §102, §Other
Mar 18, 2024
Response Filed
Jun 15, 2024
Final Rejection — §102, §Other
Aug 12, 2024
Interview Requested
Aug 21, 2024
Response after Non-Final Action
Aug 23, 2024
Response after Non-Final Action
Aug 28, 2024
Request for Continued Examination
Aug 29, 2024
Response after Non-Final Action
Sep 30, 2024
Non-Final Rejection — §102, §Other
Jan 08, 2025
Interview Requested
Feb 03, 2025
Response Filed
May 13, 2025
Final Rejection — §102, §Other
Aug 11, 2025
Notice of Allowance
Oct 07, 2025
Response after Non-Final Action
Oct 22, 2025
Response after Non-Final Action
Jan 24, 2026
Non-Final Rejection — §102, §Other (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

7-8
Expected OA Rounds
85%
Grant Probability
93%
With Interview (+7.8%)
2y 6m
Median Time to Grant
High
PTA Risk
Based on 1272 resolved cases by this examiner. Grant probability derived from career allow rate.

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