Prosecution Insights
Last updated: April 19, 2026
Application No. 19/295,356

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

Non-Final OA §102§Other
Filed
Aug 08, 2025
Examiner
WALLACE, KIPP CHARLES
Art Unit
3674
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Impulse Downhole Solutions Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
99%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
717 granted / 914 resolved
+26.4% vs TC avg
Strong +25% interview lift
Without
With
+25.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
24 currently pending
Career history
938
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
54.0%
+14.0% vs TC avg
§102
29.2%
-10.8% vs TC avg
§112
11.5%
-28.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 914 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 . Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. 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. 102a1 as being anticipated by Gilleylen (US 20140151068 A1), hereinafter Gil. With respect to claim 1, Gil discloses a flow-through assembly for use in a downhole drilling string, the flow-through assembly comprising: a motor (30); means for selectively activating the motor (being interpreted under 112 (f), this limitation is given the weight of the structure defined in the specification for performing this function which amounts to a ball catching device which catches a ball to block flow through a central aperture and redirect the flow through ports that force the fluid through the motor, Gil discloses an equivalent to this with the element 5 which has a ball catching member where the ball is caught (pgph. 32) to redirect the flow through ports 48 to force the fluid to the motor (pgph. 25), the spring 138 and ports 126 are not interpreted as being a means for actuating since they are not described as performing this function in the specification); and a rotating variable choke assembly (combination 52, 56, 60), for varying a flow rate of drilling fluid passing therethrough, the rotating variable choke assembly comprising a rotary component (52) and stationary component (60) each having at least one cooperating port or channel (56 for rotary, spaces between 60 for stationary) that enters into and out of alignment as the rotary component is driven by the motor, when activated (pgph. 28, 29). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 5404945 A discloses a flared upper end 36 with ports 37 for redirected flow after a ball is caught. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIPP CHARLES WALLACE whose telephone number is (571)270-1162. The examiner can normally be reached Monday - Friday 12:00 PM - 8:00 PM. 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, Doug Hutton can be reached at (571) 272-4137. 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. /KIPP C WALLACE/Primary Examiner, Art Unit 3674 01/16/2026
Read full office action

Prosecution Timeline

Aug 08, 2025
Application Filed
Jan 16, 2026
Non-Final Rejection — §102, §Other (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12590495
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2y 5m to grant Granted Mar 10, 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
99%
With Interview (+25.2%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 914 resolved cases by this examiner. Grant probability derived from career allow rate.

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