Prosecution Insights
Last updated: May 29, 2026
Application No. 17/557,035

ELEVATOR COUNTERWEIGHT ASSEMBLY FOR ENERGY RECOVERY AND CORRESPONDING ELEVATOR SYSTEM

Final Rejection §103
Filed
Dec 20, 2021
Priority
Dec 22, 2020 — EU 20216580.9
Examiner
GLASS, ERICK DAVID
Art Unit
2846
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Elevolt Ltd.
OA Round
2 (Final)
89%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
627 granted / 701 resolved
+21.4% vs TC avg
Moderate +7% lift
Without
With
+7.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
20 currently pending
Career history
727
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
62.7%
+22.7% vs TC avg
§102
33.4%
-6.6% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 701 resolved cases

Office Action

§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 Objections The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 6, 9-11 are objected to under 37 CFR 1.75(c) as being in improper form and can’t depend on themselves. Claims needs to correctly renumbered. 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. Claim(s) 1-15 are rejected under 35 U.S.C. 103 as being taught by Piech (PGPUB 2018/0127236). With respect to claim 1, Piech teaches Elevator counterweight assembly (14) comprising - an electrical energy generator module (20) comprising at least one electric generator (26) for generating electrical power when an axis of said at least one generator is rotated; - at least one mechanism (32) for converting a linear motion of said assembly into a rotatory motion for rotating the axis of said at least one electric generator; - an accumulator module (60) for storing electrical power produced by said electrical energy generator module; - a power transfer module (80, paragraph 0036) for discharging said accumulator module to at least one electric power sink external to said assembly; and - a battery management unit (50; paragraph 0035; charges/discharges according to power unit and controller) for causing the power transfer module to discharge said accumulator. Piech does not specifically teach causing the power transfer module to discharge said accumulator to a motor of said elevator if an accumulator charge level is below a threshold, and to discharge said accumulator module to another sink if said accumulator charge level is above said threshold. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have capacitor discharge to sink/to grid since it was known in the art of power circuitry. With respect to claim 2, Piech teaches wherein said at least one mechanism for converting linear motion into rotatory motion comprises one among a bevel gear (paragraph 0027; 20 includes gears) or a worm gear, wherein a first axis of said bevel gear or said worm gear is mechanically connected to a shaft (inherent that shaft drives generator) of said at least one electric generator so as to induce a rotatory motion of said shaft of said at least one electric generator when said first axis rotates. With respect to claim 3, Piech teaches wherein a second axis of said bevel gear or worm gear is connected to a wheel such that a rotation of said wheel induces rotation of said second axis, said wheel being adapted to be in contact with a surface parallel to a direction of motion of said assembly, (inherent that geared wheel drive shaft which drive generator) so that said wheel rotates when said assembly is in motion. With respect to claim 4, Piech teaches wherein said surface is part of, or fixed to, a mechanical guide (paragraph 0014; guide rail) for said assembly, for guiding the assembly in its linear motion. With respect to claim 5, Piech teaches wherein said accumulator module comprises at least one among: at least one super capacitor; at least one ultra capacitor; at least one battery (paragraph 007). With respect to claim 6, Piech teaches wherein said power transfer module comprises at least one among: - contacts adapted (paragraph 009) to enter into electrical contact with corresponding contacts external to said assembly; or - an induction mat adapted to cooperate with another induction mat external to said assembly. With respect to claim 7, Piech teaches further comprising a frame (18) for holding said electrical energy generator module and said accumulator module, the size of said frame being adjustable (paragraph 0028; holds various components and size) according at least one dimension. With respect to claim 8, Piech does not teach wherein said electrical energy generator module comprises at least one plurality of generators, the shafts of said at least one plurality of generators being mechanically connected to form an alignment such that rotating the shaft of one generator induces rotation of the shaft of the other generators of said plurality of generators, wherein at least one shaft of the generators of said alignment is connected to one of said at least one mechanisms for converting a linear motion of said assembly into a rotatory motion. It would have been obvious to one having ordinary skill in the art at the time the invention was made to align shafts with plurality of generators, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 9, Piech does not teach wherein said alignment of generators is arranged along a direction which is parallel or orthogonal compared to the intended direction of motion of said assembly. It would have been obvious to one having ordinary skill in the art at the time the invention was made to align shafts in parallel/orthogonal directions, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 10, Piech does not teach comprising a plurality of alignments of generators arranged along parallel and/or orthogonal directions. It would have been obvious to one having ordinary skill in the art at the time the invention was made to align shafts in parallel/orthogonal directions, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 11, Piech does not teach wherein respective mechanisms for converting a linear motion into a rotatory motion are provided at a first and a second shaft respectively at each extremity of an alignment of generators. It would have been obvious to one having ordinary skill in the art at the time the invention was made to align shafts with plurality of generators, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 12, Piech does not teach further comprising at least one among: means for engaging and disengaging an element of said at least one mechanism for converting a linear motion of said assembly into a rotatory motion; a switch for opening and closing an electrical circuit for connecting and disconnecting all or part of the generators of said energy generator module from said accumulator module. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have switch connect/disconnect the generator, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 13, Piech does not teach wherein said mechanism for converting a linear motion of said assembly into a rotatory motion comprises as part of a chain of transmission of motion at least one among a kinetic flywheel module and a continuously variable transmission module. It would have been obvious to one having ordinary skill in the art at the time the invention was made to generator to have flywheel or connect to cvt, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. In re Leshin, 125 USPQ 416. With respect to claim 14, Piech teaches - a cabin (12); - a counterweight assembly according to claim 1; - a drive unit (20) mechanically connected to said cabin and said counterweight assembly through rope means (13). With respect to claim 15, Piech teaches wherein said accumulator module comprises both at least one battery and at least one capacitor (paragraph 007), further comprising a battery management unit (50). Piech does not teach prioritizing the use of said at least one capacitor when the length of a run is below a given threshold and prioritizing the use of said at least one battery when said run is above said given threshold. It would have been obvious to one having ordinary skill in the art at the time the invention was made to have one capacitor for above threshold and one capacitor for below since it was known in the art of power circuitry. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ERICK DAVID GLASS whose telephone number is (571)272-8395. The examiner can normally be reached Mon-Fri_8-5pm. 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, Eduardo Colon-Santana can be reached at 571-272-2060. 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. /ERICK D GLASS/Primary Examiner, Art Unit 2846
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Prosecution Timeline

Dec 20, 2021
Application Filed
Oct 22, 2025
Non-Final Rejection mailed — §103
Mar 23, 2026
Response Filed
May 26, 2026
Final Rejection mailed — §103 (current)

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

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Prosecution Projections

3-4
Expected OA Rounds
89%
Grant Probability
96%
With Interview (+7.0%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 701 resolved cases by this examiner. Grant probability derived from career allowance rate.

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