Prosecution Insights
Last updated: April 19, 2026
Application No. 19/016,063

ELECTROMAGNETICALLY ACTIVATED RISING STEM VALVE

Non-Final OA §102
Filed
Jan 10, 2025
Examiner
VENKATESAN, UMASHANKAR
Art Unit
3753
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Magdrive Technologies Inc.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
93%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
619 granted / 778 resolved
+9.6% vs TC avg
Moderate +14% lift
Without
With
+13.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
31 currently pending
Career history
809
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
45.6%
+5.6% vs TC avg
§102
28.7%
-11.3% vs TC avg
§112
19.5%
-20.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 778 resolved cases

Office Action

§102
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 . DETAILED ACTION This is responsive to the claims filed 1/10/2025. Claims 1 – 20 are pending in this application. Information Disclosure Statement The information disclosure statements filed 1/10/2025 and 10/10/2025 are acknowledged by the examiner. 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. Claims 1 – 20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US Patent to Satoh et al. (4,948,091). Regarding claims 1, 8 - 9, and 15, Satoh et al. disclose a shaft (10, Fig. 1) including a stopper (12, Fig. 1) at a first end, wherein the stopper is configured to block a pipe when the valve is in a closed position; a hollow cylindrical element (6, Fig. 1), including a bottom carrier surrounding a portion of the shaft; at least one inner magnetic element (54, Fig. 1) surrounding a top end of the hollow cylindrical element; a valve housing (1, Fig. 1) surrounding the shaft, the hollow cylindrical element, and the at least one inner magnetic element, wherein the valve housing is sealed and defines a pressure vessel of the valve; an outer magnetic cartridge (5, Fig. 1) surrounding a section of the valve housing around the at least one inner magnetic element; and an actuator configured to activate one or more electromagnets in the outer magnetic cartridge; wherein actuation of the one or more electromagnets does not physically rotate the outer magnetic cartridge relative to the valve housing; wherein an exterior surface of the shaft includes threading; and wherein an interior surface of the bottom carrier of the hollow cylindrical element includes threading – shown at 11 in figure 1 - configured to matingly interact with the threading on the exterior surface of the shaft, such that the hollow cylindrical element and the shaft are rotationally coupled. Regarding claims 2, 10, and 16, Satoh et al. disclose the thread as a screw (Col. 3, Lines 12 – 19) – examiner maintains this reads on the limitation “helical threading”. Regarding claims 3 - 4, 11 – 12, and 17 - 18, examiner is interpreting flanges 2 and 3 disclosed by Satoh et al. to be part of the housing. Regarding claim 5, Satoh et al. disclose the at least one inner magnetic element (54, Fig. 1) includes at least one permanent magnet (Col. 3, Lines 43 – 48). Regarding claims 6, 13, and 19, examiner maintains the hollow cylindrical element, the valve housing, and the outer magnetic cartridge disclosed by Satoh et al. can be designed and assembled to any rising stem threaded shaft. Regarding claims 7, 14, and 20, examiner maintains the valve disclosed Satoh et al. is capable of transporting petroleum. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US Patent to Fujita et al. (4,789,132) and US patent to Weldon (9,657,656) both disclosing magnetically operated rising stem valves. Any inquiry concerning this communication or earlier communications from the examiner should be directed to UMASHANKAR VENKATESAN whose telephone number is (571)270-5602. The examiner can normally be reached Monday - Friday 9:30 AM - 6:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner' s supervisors Craig Schneider can be reached at (571) 272-3607 or Ken Rinehart can be reached at (571) 272-4881. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center for authorized users only. Should you have questions about access to Patent Center, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 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) Form at https://www.uspto.gov/patents/uspto-automated- interview-request-air-form. /UMASHANKAR VENKATESAN/ Primary Examiner, Art Unit 3753
Read full office action

Prosecution Timeline

Jan 10, 2025
Application Filed
Feb 21, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601420
3/3 WAY SOLENOID VALVE
2y 5m to grant Granted Apr 14, 2026
Patent 12601424
Valve and Pressurized Fluid Apparatus
2y 5m to grant Granted Apr 14, 2026
Patent 12590594
Pipeline Actuation System
2y 5m to grant Granted Mar 31, 2026
Patent 12588459
GATE VALVE APPARATUS AND SEMICONDUCTOR MANUFACTURING APPARATUS
2y 5m to grant Granted Mar 24, 2026
Patent 12584558
HYBRID BUTTERFLY-BALL FLOW CONTROL VALVE
2y 5m to grant Granted Mar 24, 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
80%
Grant Probability
93%
With Interview (+13.7%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 778 resolved cases by this examiner. Grant probability derived from career allow rate.

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