Prosecution Insights
Last updated: April 19, 2026
Application No. 18/723,831

PROPULSION MOTOR TOPOLOGIES

Non-Final OA §102§112
Filed
Jun 24, 2024
Examiner
GONZALEZ QUINONES, JOSE A
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
DP WORLD LOGISTICS US HOLDINGS, INC.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
88%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
871 granted / 1148 resolved
+7.9% vs TC avg
Moderate +12% lift
Without
With
+12.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
34 currently pending
Career history
1182
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
63.0%
+23.0% vs TC avg
§102
30.3%
-9.7% vs TC avg
§112
4.7%
-35.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1148 resolved cases

Office Action

§102 §112
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 . Information Disclosure Statement The information disclosure statements (IDS) submitted on 07/032024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1, 9 and 11 rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The claim 1 said in line 9: “to assist inducing a propulsion force…”. The term “assist inducing” is unclear and does not define the structural relationship between the coils and the propulsion force. The claim 1 said in line 11 and also see claim 11: “ferromagnetic core shaped to form one or more total forces…”. The claim does not define the structural shape of the core or explain how much shape produces the recited forces. Therefore, the claim 1 fails to particularly point out the structure that performs the recited function. Claim 1 said: “a propulsion force perpendicular to the magnetic flux pathway…” and “one or more total forces perpendicular to the propulsion force..”. However, the claim 1 does not specify the structural elements that generate the recited propulsion force or the total forces, nor does it explain how the claimed perpendicular relationships are structurally achieved. The claim 9 said in page 31, line 23 and also see claim 11: “to assist inducing a propulsion force…”. The term “assist inducing” is unclear and does not define the structural relationship between the armature coils and the propulsion force. The claim 9 said in page 32, line 7: “two respective forces are formed..”. The claim does not specify which structural components generates the recited forces or how such forces produced within the propulsion motor. The claim 9 said in page 32, line 9: “the two respective forces of about equal magnitude…”. The term “about equal magnitude” lacks a clear standard for determining the required degree of equality between forces. Thus metes and bounds of the claim are unclear. The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 9 rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, does not reasonably provide enablement the claimed configuration in which two forces of about equal magnitude but opposite direction result in a total force of zero. The specification does not adequately describe how the claimed magnetic structure ensures that the forces will always be equal and opposite. 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) 1-13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Jedinger (WO2020061173). As to independent claim 1, Jedinger teaches a propulsion motor (111) comprising: at least one ferromagnetic core (307) having opposite ends joined by a body (103, 105) forming a magnetic flux pathway between the opposite ends; a magnetic flux inducing device (330) to induce a first magnetic flux in the at least one ferromagnetic core (307) along the magnetic flux pathway; and armature coils (321) to induce a varying second magnetic flux in the at least one ferromagnetic core (307) perpendicular to the magnetic flux pathway, to assist inducing a propulsion force perpendicular to the magnetic flux pathway, the at least one ferromagnetic core (307) shaped to form one or more total forces perpendicular to the propulsion force due to the first magnetic flux, (see paragraph [0033, 00103, 00108] as shown in figures 2-3, 5A-5B. As to claim 2/1, Jedinger teaches wherein the opposite ends of the at least one ferromagnetic core (307) are portions of respective intersecting planes that intersect at an angle that is between 0 degrees, and less than 180 degrees as shown in figures 2-3, 5A-5B. As to claim 3/1, Jedinger teaches wherein the opposite ends of the at least one ferromagnetic core (307) are at about 90 degrees such that the at least one ferromagnetic core (307) form: a first total force normal to a first end, of the opposite ends; and a second total force normal to a second end, of the opposite ends, the first total force and the second total force being about 90 degrees relative to each other as shown in figures 2-3, 5A-5B. As to claim 4/1, Jedinger teaches wherein the body (103, 105) between the opposite ends of the at least one ferromagnetic core (307) may have an about 180 degrees shape, such that the opposite ends are in a same plane and the at least one ferromagnetic core (307) forms:a first total force normal to a first end, of the opposite ends; and a second total force normal to a second end, of the opposite ends, the first total force and the second total force about parallel relative to each other as shown in figures 2-3, 5A-5B. As to claim 5/1, Jedinger teaches wherein the opposite ends of the at least one ferromagnetic core (307) are a given angle relative to a center plane of the at least one ferromagnetic core (307), such that the at least one ferromagnetic core (307) form:a first force normal to a first end, of the opposite ends; and a second force normal to a second end, of the opposite ends, the first force and the second force summing together to form the one or more total forces perpendicular to the propulsion force as shown in figures 2-3, 5A-5B. As to claim 6/5, Jedinger teaches wherein the given angle is selected such that first components of the first force and the second force, perpendicular to the propulsion force, cancel out, and second components of the first force and the second force, perpendicular to the propulsion force, sum to form a total force perpendicular to the propulsion force (see ferromagnetic core (307)) as shown in figures 2-3, 5A-5B. As to claim 7/1, Jedinger teaches wherein the opposite ends of the at least one ferromagnetic core (307) form a non-zero angle relative to each other, the opposite ends forming symmetrical mirror-images of each other as shown in figures 2-3, 5A-5B. As to claim 8/1, Jedinger teaches wherein the magnetic flux inducing device (330) comprises one or more of a field coil (330) and a magnet as shown in figures 2-3, 5A-5B. As to independent claim 9, Jedinger teaches a propulsion motor (111) comprising: ferromagnetic cores (307) having respective opposite ends joined by a respective body (103, 105), forming a magnetic flux pathway between the opposite ends; a magnetic flux inducing device (330) to induce a first magnetic flux in the ferromagnetic cores (307) along the magnetic flux pathway; and armature coils (321, 322) to induce respective varying second magnetic flux in the ferromagnetic cores (307) perpendicular to the magnetic flux pathway, to assist inducing a propulsion force perpendicular to the magnetic flux pathway, the ferromagnetic cores (307) arranged in pairs, such that a pair of the ferromagnetic core (307) comprises: a first ferromagnetic core (307) comprising first opposite ends; and a second ferromagnetic core (307) comprising second opposite ends, wherein the first opposite ends and the second opposite ends are about parallel to each other, and are respectively configured to interact with respective ends of a track segment of a track (103) that completes, in combination with the first ferromagnetic core (307) and the second ferromagnetic core (307), the magnetic flux pathway, and wherein two respective forces are formed, perpendicular to the first opposite ends and the second opposite ends, and perpendicular to the propulsion force, the two respective forces of about equal magnitude, but opposite in direction, such that a total force on the first opposite ends and the second opposite ends, due to the two respective forces, is zero as shown in figures 2-3, 5A-5B. As to independent claim 10, Jedinger teaches a vehicle (see paragraph [0040]) configured to move along a track (103), the vehicle comprising: a payload; and one or more propulsion motors (111) mounted to the payload, the one or more propulsion motors (111) configured to form, in combination with track segments of the track (103): a propulsion force in a direction of the track (103); and one or more total forces perpendicular to the propulsion force configured to one or more of oppose gravity and laterally guide the one or more propulsion motors relative to the track (103) (see paragraph [0033, 0040-0041, 0045] as shown in figures 2-3, 5A-5B. As to claim 11/10, Jedinger teaches wherein the one or more propulsion motors (111) respectively comprise: at least one ferromagnetic core (307) having opposite ends joined by a body forming a magnetic flux pathway between the opposite ends; a magnetic flux inducing device (330) to induce a first magnetic flux in the at least one ferromagnetic core (307) along the magnetic flux pathway; and armature coils (321, 322) to induce a varying second magnetic flux in the at least one ferromagnetic core (307) perpendicular to the magnetic flux pathway, to assist inducing a propulsion force perpendicular to the magnetic flux pathway, the at least one ferromagnetic core (307) shaped to form the one or more total forces perpendicular to the propulsion force as shown in figures 2-3, 5A-5B. As to claim 12/10, Jedinger teaches wherein the one or more propulsion motors (111) comprise: one or more first propulsion motors (111) mounted to the payload, the one or more first propulsion motors (111) configured to form, in combination with first track segments of the track (103): one or more first propulsion forces in a direction of the track; and one or more guidance forces perpendicular to the one or more first propulsion forces; and one or more second propulsion motors (103) mounted to the payload, the one or more second propulsion motors (111) configured to form, in combination with second track segments of the track: one or more second propulsion forces in a direction of the track (103); and one or more levitation forces, perpendicular to the one or more second propulsion forces and the one or more guidance forces, the one or more levitation forces opposing gravity (see paragraph [0033, 0040-0041, 0045] as shown in figures 2-3, 5A-5B. As to claim 13/10, Jedinger teaches wherein the one or more propulsion motors (111) comprise: one or more first propulsion motors (111) mounted to the payload, the one or more first propulsion motors (111) configured to form, in combination with first track segments of the track (103): one or more first propulsion forces in a direction of the track (103); and one or more guidance forces perpendicular to the one or more first propulsion forces; and one or more first levitation forces perpendicular to the one or more first propulsion forces, the one or more first levitation forces opposing gravity; and one or more second propulsion motors (111) mounted to the payload, the one or more second propulsion motors (111) configured to form, in combination with second track segments of the track: one or more second propulsion forces in a direction of the track (103); and one or more second levitation forces, perpendicular to the one or more second propulsion forces and the one or more guidance forces, the one or more second levitation forces opposing gravity (see paragraph [0033, 0040-0041, 0045] as shown in figures 2-3, 5A-5B. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSE A GONZALEZ QUINONES whose telephone number is (571)270-7850. The examiner can normally be reached Monday-Friday: 6:30-2:30 EST. 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, OLUSEYE IWARERE can be reached at (571)270-5112. 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. /JOSE A GONZALEZ QUINONES/ Primary Examiner, Art Unit 2834 March 4, 2026
Read full office action

Prosecution Timeline

Jun 24, 2024
Application Filed
Mar 04, 2026
Non-Final Rejection — §102, §112
Apr 07, 2026
Response Filed

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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
76%
Grant Probability
88%
With Interview (+12.4%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1148 resolved cases by this examiner. Grant probability derived from career allow rate.

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