Prosecution Insights
Last updated: April 19, 2026
Application No. 18/693,895

DRIVE DEVICE FOR AN ELECTRIC BICYCLE WITH ELECTRONIC CADENCE CONTROLLING

Non-Final OA §102§103
Filed
Mar 20, 2024
Examiner
SCHOECH, ASHLEY TIFFANY
Art Unit
3669
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Brose Antriebstechnik GmbH & Co. Kommanditgesellschaft Berlin
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
25 granted / 32 resolved
+26.1% vs TC avg
Strong +22% interview lift
Without
With
+22.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
33 currently pending
Career history
65
Total Applications
across all art units

Statute-Specific Performance

§101
17.0%
-23.0% vs TC avg
§103
48.5%
+8.5% vs TC avg
§102
7.0%
-33.0% vs TC avg
§112
24.3%
-15.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 32 resolved cases

Office Action

§102 §103
DETAILED ACTION 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 . Examiner’s Note All foreign references cited within this office action have had translated copies provided which the examiner relies upon. Claim Objections Claim is objected to because of the following informalities: Claim 9 line 2 reads “electric motor (M)” which appears to be an artifact from before amendments and should read “electric motor” to maintain consistency with the rest of the of the claim set. Appropriate correction is required. Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: In claim 10, the “indicating element” in the limitation “an indicating element for displaying a currently set assistance level” invokes 112(f) as “indicating element” is a term that does not have definite structure which enables the display of a currently set assistance level. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. A review of the specification (paragraph 0022) shows that the following appears to be the corresponding structure to these claim limitations: “The control unit 2 includes an indicating element in the form of a display 20. On this display 20 an operating part is provided for switching an assistance level, for example in the form of a switch. When the drive device A is activated, a mode indicator 201 can be indicated on the display 20, which indicates to a user of the electric bicycle 1 what assistance level currently is chosen. Possible assistance levels here include for example "Eco", "Tour", "Sport" and "Boost".” (Emphasis added.) If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. Claim Rejections - 35 USC § 102 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-2, 9, and 11-12 is/are rejected under 35 U.S.C. 102(a)(1) and 102(a)(2) as being anticipated by Shahana US 20190300115 A1 (hereinafter Shahana). Regarding claims 1 and 12, Shahana teaches a drive device for an electric bicycle (paragraph 0045 "E-bike"), comprising - a bottom bracket shaft for driving a wheel of the electric bicycle by muscle power (Figure 1 shows a typical pedal system for human power with crankshaft 12A; Abstract explicitly discloses that the bike is human powered), - an electric motor for providing an additional driving torque for driving the wheel (paragraph 0005 discloses an electric motor to assist in propulsion), and - an electronic control unit for controlling the electric motor (Figure 2 42 "electronic controller"; paragraph 0051 discloses the controller controls driving of the motor by outputting commands to a drive circuit), wherein via the electronic control unit, a nominal cadence, from which a maximum driving power is provided by the electric motor (Figure 5 shows that maximum motor torque TX is dependent on a cadence N of each selected mode), can be specified for the bottom bracket shaft by a user of the electric bicycle by selecting one of at least two different predefined assistance levels (paragraph 0024 discloses that a user can switch between two control modes; paragraph 0076 discloses control modes L31 and L32 are associated with cadence thresholds N3 and N4 as shown on Figure 5). Regarding claim 2, Shahana teaches all of claim 1 as detailed above. Shahana further teaches that in a first assistance level of the at least two different predefined assistance levels a larger nominal cadence is specified than in a second assistance level (Figure 5 and paragraph 0076 discloses that cadence threshold N4 is higher than cadence threshold N3). Regarding claim 9, Shahana teaches all of claim 1 as detailed above. Shahana further teaches that the drive device includes exactly one electric motor (Figure 1 30 shows only one motor). Regarding claim 11, Shahana teaches all of claim 1 as detailed above. Shahana further teaches an electric bicycle with a drive device according to claim 1 (Abstract and paragraph 0045). Claim Rejections - 35 USC § 103 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 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) 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shahana as applied to claim 1 above, and further in view of Kawasaki et al. DE 102020101268 A1 (hereinafter Kawasaki) and Loehr DE 19855585 A1 (hereinafter Loehr). Regarding claim 3, Shahana teaches all of claim 2 as detailed above. Shahana does not teach a nominal cadence of 80 revolutions per minute is set in the first assistance level. Kawasaki teaches that a nominal cadence of 80 revolutions per minute is set in the first assistance level (translated page 11 paragraph 3 discloses a set cadence threshold of 80 RPM). One of ordinary skill in the art would recognize that a biker would likely pedal at a specific cadence wherein the human body is only capable of pedaling so fast, thus limiting the options of pedaling frequencies (cadences) that can feasibly be used for a motor assist system. Therefore, it would have been prima facie obvious to one of ordinary skill in the art at the time of filing to try the teachings of Kawasaki and incorporate it into the teachings of Shahana such that one control mode of Shahana would use the cadence threshold of Kawasaki since there is a finite number of identified, predictable potential solutions (i.e. cadences) to the recognized need (cadence selection) and one of ordinary skill in the art could have pursued the known potential solutions with a reasonable expectation of success. Shahana does not teach a nominal cadence of 60 revolutions per minute is set in the second assistance level. Loehr teaches that a nominal cadence of 60 revolutions per minute is set in the second assistance level (translated page 7 paragraph 1 discloses that a motor has a cadence of 60 RPM in one support mode). One of ordinary skill in the art would recognize that a biker would likely pedal at a specific cadence wherein the human body is only capable of pedaling so fast, thus limiting the options of pedaling frequencies (cadences) that can feasibly be used for a motor assist system. Therefore, it would have been prima facie obvious to one of ordinary skill in the art at the time of filing to try the teachings of Loehr and incorporate it into the teachings of Shahana such that one control mode of Shahana would use the cadence threshold of Loehr since there is a finite number of identified, predictable potential solutions (i.e. cadences) to the recognized need (cadence selection) and one of ordinary skill in the art could have pursued the known potential solutions with a reasonable expectation of success. Claim(s) 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as applied to claim 1 above, and further in view of Hahn et al. US 12208858 B2 (hereinafter Hahn). Regarding claim 4, Shahana teaches all of claim 1 as detailed above. Shahana does not teach that via the electronic control unit at least two different cadence ranges can be selected, within which nominal cadences for the at least two different predefined assistance levels must lie. Han teaches that via the electronic control unit at least two different cadence ranges can be selected (column 11 lines 19-41 disclose a user adjustable cadence bounds), within which nominal cadences for the at least two different predefined assistance levels must lie (column 11 lines 19-41 disclose that a target cadence defined by a user must be within selected cadence bounds). It would have been prima facie obvious to one of ordinary skill in the art at the time of filing to have modified Shahana to incorporate the teachings of Hahn such that cadence bounds can be defined by a user according to the teachings of Hahn wherein any cadence targets of Shahana must fall within these bounds according to Hahn. This modification would be done with a reasonable expectation of success to prevent unexpected motor assistance beyond desired range. Claim(s) 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as modified by Hahn as applied to claim 4 above, and further in view of Tsuchizawa US 20160347406 A1 (hereinafter Tsuchizawa). Regarding claim 5, the modified Shahana reference teaches all of claim 4 as detailed above. Hahn teaches that a cadence range can be selected via the electronic control unit (column 11 lines 19-41) as detailed above. The modified Shahana reference does not teach a first cadence range of 30 to 60 revolutions per minute and a second cadence range of 60 to 90 revolutions per minute. Tsuchizawa teaches a first cadence range of 30 to 60 revolutions per minute (paragraph 0043 discloses a cadence range of 31-60 RPM where torque adjustment occurs) and a second cadence range of 60 to 90 revolutions per minute (paragraph 0043 discloses a cadence range of 61-90 RPM where torque adjustment occurs). One of ordinary skill in the art would recognize that a biker would likely pedal within a specific cadence range wherein the human body is only capable of pedaling so fast, thus limiting the options of pedaling frequencies (cadences) that can feasibly be used for a motor assist system. Therefore, it would have been prima facie obvious to one of ordinary skill in the art at the time of filing to try the teachings of Tsuchizawa and incorporate it into the teachings of the modified Shahana reference such that the cadence ranges of Hahn can be adjusted to one of the two specific motor torque adjustment cadence ranges of Tsuchizawa since there is a finite number of identified, predictable potential solutions (i.e. cadences) to the recognized need (cadence range selection) and one of ordinary skill in the art could have pursued the known potential solutions with a reasonable expectation of success. Claim(s) 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as modified by Hahn and Tsuchizawa as applied to claim 5 above, and further in view of Takayama et al. DE 102019127234 A1 (hereinafter Takayama). Regarding claim 6, the modified Shahana reference teaches all of claim 5 as detailed above. Hahn teaches that a cadence range can be selected via the electronic control unit (column 11 lines 19-41) as detailed above. The modified Shahana reference does not teach a third cadence range of 50 to 80 revolutions per minute. Takayama teaches a third cadence range of 50 to 80 revolutions per minute (translated page 15 paragraph 1 discloses controlling a cadence between 60-70 RPM). One of ordinary skill in the art would recognize that a biker would likely pedal within a specific cadence range wherein the human body is only capable of pedaling so fast, thus limiting the options of pedaling frequencies (cadences) that can feasibly be used for a motor assist system. Therefore, it would have been prima facie obvious to one of ordinary skill in the art at the time of filing to try the teachings of Takayama and incorporate it into the teachings of the modified Shahana reference such that the cadence ranges of Hahn can be adjusted to the controlling cadence range of Takayama since there is a finite number of identified, predictable potential solutions (i.e. cadences) to the recognized need (cadence range selection) and one of ordinary skill in the art could have pursued the known potential solutions with a reasonable expectation of success. Claim(s) 7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as modified by Hahn as applied to claim 4 above, and further in view of Vasiliotis et al. US 20090164076 A1 (hereinafter Vasiliotis) and Shimano et al. US2013267376A1 (Shimano). Regarding claim 7, the modified Shahana reference teaches all of claim 4 as detailed above. Shahana further teaches that identical assistance levels can be selected, via the electronic control unit, by the user of the electric bicycle independently of a selected cadence range (paragraph 0024 discloses that a user can switch between two control modes; examiner interprets Shahana's lack of consideration of cadence ranges when selecting assistance levels as being "independent" to any selected cadence ranges taught by the additional art of Hahn). Shahana does not teach that the assistance levels specify different nominal cadences depending on the cadence range. To teach this, a clever combination of Vasiliotis and Shimano is required. Vasiliotis teaches that cadence ranges are adjusted by shifting gears (paragraph 0036 discloses adjusting cadence ranges by shifting gears). It would have been prima facie obvious to one of ordinary skill in the art at the time of filing to have modified Shahana to incorporate the teachings of Vasiliotis such that cadence range changing as taught by Hahn is done by swapping transmission gears as taught by Vasiliotis. This modification would be made with a reasonable expectation of success to reduce unnecessary strain caused by maintaining gears unfit for a certain cadence range and improve efficiency by ensuring optimal mechanical advantage available in a desired cadence range. The modified Shahana still does not teach that the assistance levels specify different nominal cadences depending on the cadence range. Shimano teaches that that the assistance levels specify different nominal cadences depending on the transmission gear (paragraph 0058 discloses that a prescribed crank rotational speed is set based on each transmission gear). It would have been prima facie obvious to one of ordinary skill in the art at the time of filing to have modified Shahana to incorporate the teachings of Shimano such that when transmission gears are changed, a prescribed crank rotational speed of a set mode is changed based on the new gearset as taught by Shimano. Since Vasiliotis teaches that cadence ranges are changed by changing a transmission gear as detailed above, this combination would effectively accomplish the intended result of specifying different nominal cadences depending on the cadence range. This modification would be made with a reasonable expectation of success to ensure that a cadence speed is appropriate for a set transmission as disclosed in Shimano (paragraph 0058). Claim(s) 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as applied to claim 1 above, and further in view of Chan US 20110183805 A1 (hereinafter Chan). Regarding claim 8, Shahana teaches all of claim 1 as detailed above. Shahana does not explicitly teach that the driving torque additionally provided by the electric motor is proportional to a rider torque introduced by muscle power via the bottom bracket shaft. Chan teaches that the driving torque additionally provided by the electric motor is proportional to a rider torque introduced by muscle power via the bottom bracket shaft (paragraph 0216 "the output torque from the electric motor 8036 is proportional to the magnitude of torque applied by the cyclist on the pedals"). It would have been prima facie obvious to one of ordinary skill in the art at the time of filing to have further modified Shahana to incorporate the teachings of Chan such that the motor torque of Shahana is proportional to driver torque as taught by Chan. This modification would be made with a reasonable expectation of success to improve responsiveness of motor assistance to user needs. Claim(s) 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Shanana as applied to claim 1 above, and further in view of Aoki et al. US 20120081080 A1 (hereinafter Aoki). Regarding claim 10, Shahana teaches all of claim 1 as detailed above. Shahana does not explicitly teach that the electronic control unit comprises an indicating element for displaying a currently set assistance level. Aoki teaches that the electronic control unit comprises an indicating element for displaying a currently set assistance level (paragraph 0073 "The mode display area 210 serves to display a presently set mode… The mode display area 210 also includes a mode changer switch 224 for changing modes to be set"). It would have been prima facie obvious to one of ordinary skill in the art at the time of filing to have modified Shahana to incorporate the teachings of Aoki such that the assistance levels of Shahana can be displayed and modified by the display element of Aoki. This modification would be done with a reasonable expectation of success to improve user awareness of the current mode. Documents Considered but not Relied Upon The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Dube et al. US 20080071436 A1 discloses an electric bike with output power proportional to user effort. Hatanaka et al. US 20020120382 A1 discloses an electric bike with assist power proportional to leg power. Liu et al. US 20180170212 A1 discloses an electric bike wherein driver and motor torque are proportional. Manewald et al. US 20250249978 A1 discloses setting an operating point of an electric bike to 60 RPM. Takashita et al. US 20170355412 A1 discloses a display for showing control modes of an electric bike and an operation unit for switching said control modes in the form of a switch or lever. Thompson et al. US 20160016627 A1 discloses an electric motor provided for cadence optimization to be assisted to maintain a pre-set optimal cadence. Wiegel et al. US 20190176930 A1 discloses a one motor electric bicycle where the user can select between a plurality of assistance modes. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Ashley Tiffany Schoech whose telephone number is (571)272-2937. The examiner can normally be reached 6:00 am - 4:30 pm PST Monday - Thursday. 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, Erin Piateski can be reached at 571-270-7429. 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. /A.T.S./Examiner, Art Unit 3669 /Erin M Piateski/Supervisory Patent Examiner, Art Unit 3669
Read full office action

Prosecution Timeline

Mar 20, 2024
Application Filed
Oct 01, 2025
Non-Final Rejection — §102, §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

1-2
Expected OA Rounds
78%
Grant Probability
99%
With Interview (+22.1%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 32 resolved cases by this examiner. Grant probability derived from career allow rate.

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