Prosecution Insights
Last updated: April 19, 2026
Application No. 18/425,548

FLOW SWITCH

Non-Final OA §102
Filed
Jan 29, 2024
Examiner
ALLEN, ANDRE J
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Barksdale Inc.
OA Round
1 (Non-Final)
92%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
98%
With Interview

Examiner Intelligence

Grants 92% — above average
92%
Career Allow Rate
1304 granted / 1425 resolved
+23.5% vs TC avg
Moderate +6% lift
Without
With
+6.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
27 currently pending
Career history
1452
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
16.1%
-23.9% vs TC avg
§102
34.6%
-5.4% vs TC avg
§112
28.2%
-11.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1425 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Information Disclosure Statement 2. The information disclosure statement (IDS) submitted on 4/4/2023 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Response to Amendment 3. Acknowledgement is made of the preliminary amendment(s) filed 12/5/2024. Specification 4. The title of the invention is not descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. The following title is suggested: “Flow Switch with Variable Orifice”. Claim Rejections - 35 USC § 102 5. 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 and 8 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Monson et al (US 7559485 B2). Regarding claim 1 Monson et al teaches a base body (figs. 1 & 4); an orifice body 400 which is moveable relative to the base body (Abstract)(Summary)(Col. 3 lines 27-62); and a spring 402 connected to the orifice body 400; wherein the orifice body 400 comprises an opening 414 that is variable in size with the relative movement of the orifice body 400. Regarding claim 8 Monson et al teaches a switch (Inherently function of the valve assembly) configured to be operated when the orifice body 402 is moved; and an electronics subassembly (Implied col. 1 lines 8-17) in electronic connection with the switch. Allowable Subject Matter 6. Claim 2 is 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. The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 2 the cited prior art does not anticipate nor render obvious a projection fixed relative to an orifice body, wherein the projection extends, at least in part, through an opening in the orifice body when the orifice body is in a first position and the projection is located entirely outside of the orifice body when the orifice body is in a second position. Claims 3-7 are objected based on their dependency of claim 2. 7. Claims 9-20 are allowed. The following is an examiner’s statement of reasons for allowance: Regarding claim 9 the cited prior art does not anticipate nor render obvious a projection fixed relative to an orifice body, wherein the projection extends, at least in part, through an opening in the orifice body when the orifice body is in a first position and the projection is located entirely outside of the orifice body when the orifice body is in a second position. Regarding claim 15 the cited prior art does not anticipate nor render obvious an opening that is variable in size with movement of an orifice body; providing flow of a fluid at a first volumetric flow rate such that the opening has a first size; and providing the flow of the fluid at a second volumetric flow rate which is higher than the first volumetric flow rate such that the opening has to a second size which is larger than the first size. Claims 10-20 are allowed based on their dependency of claims 9 and / or 15. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. DE 202024101016 U1 Flow monitor WO 2020210651 A1 SYSTEMS AND METHODS FOR A VARIABLE FLOW RESISTOR US 5261597 A Temperature responsive 3-way line valve with shape memory alloy actuator Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDRE J ALLEN whose telephone number is (571)272-2174. The examiner can normally be reached Mon-Fri. 9am-5PM. 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, Kristina M Deherrera can be reached at (303) 297-4237. 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. /ANDRE J ALLEN/Primary Examiner, Art Unit 2855
Read full office action

Prosecution Timeline

Jan 29, 2024
Application Filed
Feb 02, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600515
METHOD FOR MONITORING THE SEALING OF A CONTAINER AND DEVICE WITH IMPROVED SEALING MONITORING
2y 5m to grant Granted Apr 14, 2026
Patent 12598716
SENSOR DEVICE AND VALVE ASSEMBLY WITH IMPROVED SEALING FEATURES
2y 5m to grant Granted Apr 07, 2026
Patent 12596045
Pressure Sensor and Pressure Relief Valve Testing
2y 5m to grant Granted Apr 07, 2026
Patent 12596044
PRESSURE SENSOR HAVING AN ELASTIC CONDUCTIVE MEMBER
2y 5m to grant Granted Apr 07, 2026
Patent 12590858
PROTECTIVE CAP FOR PRESSURE SENSORS
2y 5m to grant Granted Mar 31, 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
92%
Grant Probability
98%
With Interview (+6.2%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 1425 resolved cases by this examiner. Grant probability derived from career allow rate.

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