Prosecution Insights
Last updated: May 29, 2026
Application No. 18/113,034

Method and Apparatus for Extending Battery Life of Capsule Endoscope

Final Rejection §103
Filed
Feb 22, 2023
Priority
Dec 20, 2020 — CIP of 17/128,142 +1 more
Examiner
SONG, LI-TING
Art Unit
3795
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Capsovision Inc.
OA Round
2 (Final)
65%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
54 granted / 83 resolved
-4.9% vs TC avg
Strong +39% interview lift
Without
With
+38.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
18 currently pending
Career history
112
Total Applications
across all art units

Statute-Specific Performance

§103
81.3%
+41.3% vs TC avg
§102
11.2%
-28.8% vs TC avg
§112
7.0%
-33.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 83 resolved cases

Office Action

§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 . Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1, 5-9 and 12 are rejected under 35 U.S.C. 103 as being unpatentable over Yanagihara (US2020/0069149) in view of Wang (US2010/0220179). Regarding claim 1, Yanagihara discloses the method of extending battery life for a wireless endoscope powered by a battery, the method comprising: operating the wireless endoscope in a first operating mode (Fig. 9: normal operation mode), wherein a peak current in the first operating mode is contributed by at least two sub-tasks associated with operations of the wireless endoscope and said at least two sub-tasks are performed with one or more overlapping periods in time (Fig. 9: normal operation mode allows at least two-subtasks to be performed with full overlap, the sub-tasks consisting of imaging portion, light-source portion, image processing position and wireless communication portion contributes to a peak current); determining a running voltage indicating a battery output voltage at or near time instances of the peak current (it is determined whether or not battery 24 is higher than a predetermined threshold [0118]); and in response to the running voltage below a threshold, switching operating mode of the wireless endoscope to a second operating mode by reducing said one or more overlapping periods associated with said at least two sub-tasks so as to reduce the peak current to a second peak current (if the level the battery 24 has decreased to the predetermined threshold or further, the wireless endoscope may transition from normal operation mode to standby mode 5 in step S25[0120]). Yanagihara fails to specifically disclose wherein the wireless endoscope is a capsule endoscope, however in the same field of endeavor, Wang teaches a substantially similar wireless endoscope, the wireless endoscope being a capsule endoscope (Fig. 1B: capsule with housing 10). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to recognize that the capabilities of the wireless endoscope of Yanagihara can be applied a wireless endoscope, including the capsule endoscope taught by Wang, as both are wireless and reliant on batteries for power. A capsule endoscope would be an alternative method of capturing images compared to a traditional endoscope. Regarding claim 5, Yanagihara, modified by Wang, discloses the method of claim 1. Yanagihara further discloses wherein said at least two sub-tasks comprise image sensing, image processing, and pre-charging LED light source (Fig. 9: sub-tasks are imaging portion/image sensing, image processing portion/image processing, light-source portion/pre-charging LED light source). Regarding claim 6, Yanagihara, modified by Wang, discloses the method of claim 5, but fails to disclose wherein said at least two sub-tasks comprise image write to an archive memory. In the same field of endeavor, Wang teaches a substantially similar method, further comprising wherein the sub-tasks comprise image write to an archive memory (nonvolatile archival memory may be provided to allow images to be retrieved at a docking station outside the body, after capsuled has been recovered [0031]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to include an image write to an archive memory sub-task for a wireless endoscope, as including an archive memory sub-task would allow multiple images to be stored in the wireless endoscope until it is convenient to retrieve the images. Regarding claim 7, Yanagihara, modified by Wang, discloses the method of Claim 5. Yanagihara further discloses wherein said at least two sub-tasks comprise image transmission to an external wireless receiver (Fig. 9: wireless communication portion; Fig. 1, 3 & 4: wireless communication portion 33 communicates with wireless communication portion 26 [0041]). Regarding claim 8, Yanagihara, modified by Wang, discloses the method of Claim 1. Yanagihara further discloses wherein said at least two sub-tasks are spread so that an overlap between two of said at least two sub-tasks is reduced (Fig. 9: sub-tasks are spread between modes, where a first sub-tasks is completed in a first mode and a second sub-task is not completed in the first mode, reducing overlap). Regarding claim 9, Yanagihara, modified by Wang, discloses the method of Claim 1. Yanagihara further discloses wherein said at least two sub-tasks are spread so that an overlap between two of said at least two sub-tasks is reduced to 0 (Fig. 9: sub-tasks are spread between modes, wherein in a first mode such as the normal operation mode, a first sub-task such as imaging portion and a second sub-task such as image processing portion is conducted, and in a second mode such as mode 3, the first sub-task imaging portion is not conducted and the second sub-task image processing portion is conducted, thus the overlap between the tasks does not exist anymore). Regarding claim 12, Yanagihara discloses a wireless endoscope, comprising: a pixel array being responsive to light energy received by the pixel array (imaging portion 20 comprising CCD or CMOS [0036]); an light source to illuminate a scene for the pixel array (light source portion 23 with light guide 23b); one or more circuits coupled to the pixel array and the light source (Fig. 2: circuitry exists connecting electrical components on the substrate 16); and a battery to supply electrical power to the pixel array, the light source and said one or more circuits (battery 24 supplies electric power to the control portion, the light source portion, image processing portion, wireless communication portion, imaging portion and image analysis portion [0046]); wherein the battery, the pixel array, the light source and said one or more circuits are enclosed in a housing (Fig. 1: all components, battery 24, imaging portion 20, light source 23 and light guide 23b, and circuitry are in the wireless endoscope 1); and wherein said one or more circuits, the pixel array and the light source are configured to: operate the wireless endoscope in a first operating mode (Fig. 9: normal operation mode), wherein a identifying a peak current in a current profile consumed by the wireless endoscope, wherein the peak current in the first operating mode is contributed by at least two sub-tasks associated with operations of the wireless endoscope and said at least two sub-tasks are performed with one or more overlapping periods in time (Fig. 9: normal operation mode allows at least two-subtasks to be performed with full overlap, the sub-tasks consisting of imaging portion, light-source portion, image processing position and wireless communication portion contributes to a peak current); determine a running voltage indicating a battery output voltage at or near time instances of the peak current (it is determined whether or not battery 24 is higher than a predetermined threshold [0118]); and in response to the running voltage below a threshold, switch operating mode of the wireless endoscope to a second operating mode by reducing said one or more overlapping periods associated with said at least two sub- tasks so as to reduce the peak current to a second peak current (if the level the battery 24 has decreased to the predetermined threshold or further, the wireless endoscope may transition from normal operation mode to standby mode 5 in step S25[0120]). Yanagihara fails to disclose wherein the wireless endoscope is specifically a capsule endoscope comprising an exterior housing, and wherein the light source is specifically an LED, however in the same field of endeavor, Wang teaches a substantially similar wireless endoscope, the wireless endoscope being a capsule endoscope (Fig. 1B: capsule with housing 10), wherein the light source within the wireless capsule endoscope is an LED (Fig. 1B: illumination system 12 contains LED [0032]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to recognize that the capabilities of the wireless endoscope of Yanagihara can be applied a wireless endoscope, including the capsule endoscope taught by Wang, as both are wireless and reliant on batteries for power. A capsule endoscope would be an alternative method of capturing images compared to a traditional endoscope. Further, since Yanagihara fails to specify a specific type of light source, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have used any known light source in the endoscope art, including the commonly-used LED taught by Wang, as the light source of Yanagihara, to illuminate the working area. Claim 3 is rejected under 35 U.S.C. 103 as being unpatentable over Yanagihara in view of Wang and Kawasaki et al. (US2012/0200685). Regarding claim 3, Yanagihara, modified by Wang, discloses the method of claim 1, but fails to disclose wherein the running voltage being below a threshold triggers a condition causing a power-on-reset signal. In the same field of endeavor, Kawasaki teaches a wireless endoscope powered by a battery (Fig. 1: scope includes power supply unit 112 that includes a battery [0047]), wherein when the battery voltage is below various thresholds, steps are taken to reduce the decrease in battery capacity [0028], specifically preventing the scope from having to repeatedly transmit still image data, consuming more power. Kawasaki further teaches wherein the running voltage being below a threshold triggers a condition causing a power-on-reset signal (Fig. 7: battery, with a full charge at 4.2V may be depleted to the reset detection voltage or below to the discharge end voltage, at 2.8V). In view of Kawasaki, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have included the threshold of the reset detection voltage as taught by Kawasaki, to the device of Yanagihara, as it is known in the endoscope and power-saving art that a power-on-reset signal is often triggered when the voltage is below a reset detection signal to prevent damage, crashes or errors to the device from running due to low voltage supply. Claims 10 and 11 are rejected under 35 U.S.C. 103 as being unpatentable over Yanagihara in view of Daidoji et al. (US2017/0258307). Regarding claim 10, Yanagihara, modified by Wang, discloses the method of Claim 1, but fails to disclose wherein said at least two sub-tasks are spread so that a duration for at least one sub-task is extended. In the same field of endeavor, Daidoji teaches wherein at least two target sub-tasks are spread so that a duration for at least one sub-tasks is extended (Fig. 9: at least two target sub-tasks, specifically sub-tasks during tb and tc, are spread so that a duration for the highest-current sub-task, indicated by Ic, is extended). Increasing the duration for the at least one sub-task increases its duty cycle and intensifies the function of the sub-task. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to include wherein said at least two target sub-tasks are spread so that a direction for one highest-current sub-task is extended, as taught by Daidoji, to intensify the function of the sub-task. Regarding claim 11, Yanagihara, modified by Wang, discloses the method of Claim 1, but fails to disclose wherein said at least two sub-tasks are spread so that a duration for one highest-current sub-task is extended. Daidoji teaches wherein said at least two target sub-tasks are spread so that a direction for one highest-current sub-tasks is extended (Fig. 9: at least two target sub-tasks, specifically sub-tasks during tb and tc, are spread so that a duration for the highest-current sub-task, indicated by Ic, is extended). Increasing the duration for the at least one sub-task increases its duty cycle and intensifies the function of the sub-task. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to include wherein said at least two target sub-tasks are spread so that a direction for one highest-current sub-task is extended, as taught by Daidoji, to intensify the function of the sub-task. Response to Arguments Applicant’s arguments with respect to claims 1 and 12 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Upon further consideration, a new ground(s) of rejection is made in view of Yanagihara and Wang. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. See references cited in PTO-892. Nadiv et al. (US2019/0029504) has been cited as pertinent art. Nadiv teaches a capsule endoscope, similar to applicant’s, wherein steps of capturing images are not allowed to be performed at the same time because of battery power consideration (e.g., high current peak), thus implying that the steps of capturing images are performed separately, thus without overlap, to reduce current peaks, for power conservation [0113-0114]. This concept may be applied to teach the idea of separating tasks to reduce peak current, in order to reduce power consumption. 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 or earlier communications from the examiner should be directed to LI-TING SONG whose telephone number is (571)272-5771. The examiner can normally be reached 8-5. 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, Anhtuan Nguyen can be reached at 571-272-4963. 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. /LI-TING SONG/Examiner, Art Unit 3795 /ANH TUAN T NGUYEN/Supervisory Patent Examiner, Art Unit 3795 4/6/26
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Prosecution Timeline

Feb 22, 2023
Application Filed
Oct 27, 2025
Non-Final Rejection mailed — §103
Dec 25, 2025
Response Filed
Apr 08, 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
65%
Grant Probability
99%
With Interview (+38.9%)
2y 12m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 83 resolved cases by this examiner. Grant probability derived from career allowance rate.

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