Prosecution Insights
Last updated: October 01, 2026
Application No. 18/196,875

SOLENOID ASSEMBLY WITH EXTENDED STROKE LENGTH

Non-Final OA §102§103
Filed
May 12, 2023
Priority
May 13, 2022 — EU 22173366.0
Examiner
HOMZA, LISA NHUNG
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
HAMILTON SUNDSTRAND Corporation
OA Round
2 (Non-Final)
87%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
689 granted / 794 resolved
+18.8% vs TC avg
Minimal +1% lift
Without
With
+1.3%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
29 currently pending
Career history
816
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
48.4%
+8.4% vs TC avg
§102
28.9%
-11.1% vs TC avg
§112
13.7%
-26.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 resolved cases

Office Action

§102 §103
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 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 1-4, 8-11, 16 and 20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Brown (5,422,617). Regarding claim 1, Brown discloses: a static housing (12); a plunger (14, 30) disposed within the housing (12) and translatable along an actuation axis in response to a magnetic actuation force; an intermediate element (26) disposed within the housing (12) and surrounding at least a portion of the plunger (14, 32), wherein the intermediate element (26) is translatable along the actuation axis (see the drawing below) in response to magnetic actuation force (see col. 1, lines 28—33); and a coil (16, 32) arrangement disposed within the housing (12) configured to provide a first magnetic actuation force in response to electrical excitation thereof and to provide a second magnetic actuation force in response to electrical excitation thereof (see col. 1, lines 28—33 and col. 4, lines 8-37); wherein the coil arrangement (16, 32) is arranged such that the first magnetic actuation force is configured to translate the intermediate element (26) and the plunger (14, 30) together with respect to the static housing (12), and such that the second magnetic actuation force is configured to translate the plunger (14, 30) with respect to the intermediate element (26), (see col. 4, lines 8-37); [AltContent: arrow][AltContent: textbox (1st Gap)][AltContent: textbox (1st actuation surface)][AltContent: arrow][AltContent: arrow][AltContent: textbox (1st actuation limiting surface)][AltContent: arrow][AltContent: textbox (2nd Gap )][AltContent: arrow][AltContent: textbox (Sliding join)][AltContent: arrow][AltContent: textbox (Cavity )][AltContent: connector][AltContent: textbox (Actuation axis)][AltContent: arrow][AltContent: textbox (2st actuation surface)][AltContent: textbox (2nd actuation limiting surface)][AltContent: arrow] PNG media_image1.png 238 456 media_image1.png Greyscale Regarding claim 2, Brown discloses: the coil arrangement (16, 32) comprises: a first coil assembly (16) disposed within the housing (12) and configured to provide the first magnetic actuation force in response to electrical excitation thereof (see col. 3, lines 3-32); and a second, different coil assembly (32) disposed within the housing (12) and configured to provide the second magnetic actuation force in response to electrical excitation thereof (see col. 3, lines 3-32). Regarding claim 8, Brown discloses: the first (16) and second coil assemblies (32) are arranged in series axially along the actuation axis (see the drawing above). Regarding claim 9, Brown discloses: a sliding joint (see the drawing below/above) between the intermediate element (26) and the plunger (14, 30). PNG media_image2.png 233 591 media_image2.png Greyscale Regarding claim 10, Brown discloses: the plunger (14, 30) includes a second actuation surface (see the drawing above) opposing a second actuation limiting surface of the housing (12), and wherein a second gap (see the drawing above) between the second actuation surface (see the drawing above) and the second actuation limiting surface (see the drawing above) is reduced or closed in response to the second magnetic actuation force translating the plunger (14, 30); (see Col. 4, lines 40-55; and Col. 4, lines 50-65; Col. 5, lines 1-20). Regarding claim 16, Brown discloses: the second actuation (see the drawing above) and actuation limiting surfaces (see the drawing above) are angled at an acute angle relative to a radial direction from the actuation axis (see the drawing above). Regarding claim 11, Brown discloses: the first and second coil assemblies (16, 32) are disposed in respective cavities in the housing (12). Regarding claim 3, Brown discloses: the intermediate element (26) includes a first actuation surface (see the drawing above) opposing a first actuation limiting surface (see the drawing above) of the housing (12), and wherein a first gap (see the drawing above) between the first actuation surface and the first actuation limiting surface is reduced or closed in response to the first magnetic actuation force translating the intermediate element (26), (see col. 4, lines 8-38). Regarding claim 4, Brown discloses: the first actuation (see the drawing above) and actuation limiting surfaces (see the drawing above) are angled at an acute angle relative to a radial direction from the actuation axis (see the drawing above). Regarding claim 20, Brown discloses: the electrically energizing the first and second coil assemblies simultaneously (see col. 4, lines 8—20). a static housing (12); a plunger (14, 30) disposed within the housing (12) and translatable along an actuation axis in response to a magnetic actuation force; an intermediate element (26) disposed within the housing (12) and surrounding at least a portion of the plunger (14, 32), wherein the intermediate element (26) is translatable along the actuation axis (see the drawing below) in response to magnetic actuation (see col. 1, lines 28—33); and a coil (16, 32) arrangement disposed within the housing (12) configured to provide a first magnetic actuation force in response to electrical excitation thereof and to provide a second magnetic actuation force in response to electrical excitation thereof (see col. 1, lines 28—33 and col. 4, lines 8-37); the coil arrangement (16, 32) including the first coil assembly (16) and the second coil assembly (32), the first coil assembly (16) disposed within the housing (12) and configured to provide the first magnetic actuation force in response to electrical excitation thereof, the second coil assembly (32) disposed within the housing (12) and configured to provide the second magnetic actuation force in response to electrical excitation thereof; wherein the coil arrangement (16, 32) is arranged such that the first magnetic actuation force is configured to translate the intermediate element (26) and the plunger (14, 30) together with respect to the static housing (12), and such that the second magnetic actuation force is configured to translate the plunger (14, 30) with respect to the intermediate element (26), (see col. 4, lines 8-37); Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 5-7, 17 and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Brown (5,422,617). Regarding claims 5-7, 17 and 18, Brown teaches the claimed subject as disclosed above, however, fails to explicitly disclose the acute angle is an angle between 300-600; 400-500 or about 450. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to make the acute angle is an angle between 300-600; 400-500 or about 450 for the purpose of providing a smoother, more stability. Claim 19 are rejected under 35 U.S.C. 103 as being unpatentable over Brown (5,422,617) in view of McGee (US 4,615,548). Regarding claim 19, Brown discloses: a static housing (12); a plunger (14, 30) disposed within the housing (12) and translatable along an actuation axis in response to a magnetic actuation; an intermediate element (26) disposed within the housing (12) and surrounding at least a portion of the plunger (14, 32), wherein the intermediate element (26) is translatable along the actuation axis (see the drawing below) in response to magnetic actuation (see col. 1, lines 28—33); and a coil (16, 32) arrangement disposed within the housing (12) configured to provide a first magnetic actuation force in response to electrical excitation thereof and to provide a second magnetic actuation force in response to electrical excitation thereof and to provide a second magnetic actuation force in response to electrical excitation thereof (see col. 1, lines 28—33 and col. 4, lines 8-37); wherein the coil arrangement (16, 32) is arranged such that the first magnetic actuation force is configured to translate the intermediate element (26) and the plunger (14, 30) together with respect to the static housing (12), and such that the second magnetic actuation force is configured to translate the plunger (14, 30) with respect to the intermediate element (26), (see col. 4, lines 8-37); Brown teaches the claimed subject as disclosed above, however, fails to explicitly disclose: a door lock; and the solenoid assembly wherein translation of the plunger and is configured to provide selective locking or unlocking of the door lock. McGee discloses a door lock system comprising solenoid and plunger configured to provide selective locking or unlocking of the door lock (see the abstract). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to make the make the door lock system as taught by McGee with Brown’s device for the purpose of providing the speed, reliability, and security features. Response to Arguments Applicant's arguments filed 12/11/25 have been fully considered but they are not persuasive. In the REMARKS: “Brown does not disclose or suggest that a coil arrangement such that (i) a first magnetic actuation force is configured to translate an intermediate element and a plunger together with respect to a static housing and (ii) a second magnetic actuation force is configured to translate the plunger with respect to the intermediate element”. This argument is not found to be persuasive, because “protrusion” as shown in Figure 2 of the applicant below is equivalent with element “38” of the Prior Art of record. Therefore, it would produce the same function. [AltContent: arrow][AltContent: textbox (Protrusion)] PNG media_image3.png 234 238 media_image3.png Greyscale Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication should be directed to Lisa Homza whose telephone number is (571) 272-3592. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Shawki Ismail can be reached on (571) 272-3985. 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 the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Lisa Nhung Homza/ Patent Examiner - Art Unit 2837 February 12, 2026 /SHAWKI S ISMAIL/Supervisory Patent Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

May 12, 2023
Application Filed
Sep 11, 2025
Non-Final Rejection mailed — §102, §103
Dec 11, 2025
Response Filed
Feb 24, 2026
Final Rejection mailed — §102, §103
Apr 03, 2026
Response after Non-Final Action

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
87%
Grant Probability
88%
With Interview (+1.3%)
2y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 794 resolved cases by this examiner. Grant probability derived from career allowance rate.

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