Prosecution Insights
Last updated: October 26, 2026
Application No. 18/600,502

SOLAR CHARGER FOR A HEAD-MOUNTED WEARABLE DEVICE

Non-Final OA §102§103
Filed
Mar 08, 2024
Examiner
TARDIF, DAVID P
Art Unit
2876
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Google LLC
OA Round
1 (Non-Final)
72%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
381 granted / 529 resolved
+4.0% vs TC avg
Moderate +10% lift
Without
With
+10.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
18 currently pending
Career history
558
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
63.7%
+23.7% vs TC avg
§102
28.2%
-11.8% vs TC avg
§112
4.7%
-35.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 529 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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 03/08/2024 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 § 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)(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. 1. Claims 1, 2 and 4-10 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Chelf (2023/0333392). As to claim 1: Chelf teaches a head-mounted wearable device (HMWD) (claim 1, 100) comprising: a solar charging system comprising: one or more solar panels including a first solar panel disposed at a first side of a frame of the HMWD (paragraph 0058, wherein the panel can be on either side or arms of the glasses); a controller electrically connected to the one or more solar panels (paragraph 0059, control system, 140); an energy storage device disposed at a second side of the frame of the HMWD and electrically connected to a power level monitor (batteries 160a, 160b, figure 1, in both arms, power level monitor explained in paragraph 0128, battery charging circuit); and a power management integrated circuit (PMIC) electrically connected to the energy storage device and is electrically connected to one or more loads of the HMWD (power management module 229, paragraph 0072). As to claim 2: Chelf teaches a light intensity sensor electrically connected to the one or more solar panels and to a processor (paragraph 0054, “sensor” connected to all of the elements through a cable). As to claim 4: Chelf teaches that the first side of the frame of the HMWD is a first temple arm (figure 1, 155a and 155b). As to claim 5: Chelf teaches that the second side of the frame of the HMWD is a second temple arm (figure 1, 155a and 155b). As to claim 6: Chelf teaches that the one or more loads includes a light engine assembly disposed at one or more shoulders of the frame of the HMWD (paragraph 0033). As to claim 7: Chelf teaches that the one or more loads includes a dimmer (paragraph 0129). As to claim 8: Chelf teaches a second solar panel of the one or more solar panels disposed at the second side of the frame of the HMWD (paragraph 0128 explains solar panels in multiple locations including the side arms). As to claim 9: Chelf teaches a dimmer comprising: a photochromic lens (paragraphs 0036, 0040) disposed at a world side (paragraph 0040) of a micro-light emitting diode (microLED) display (paragraph 0082, figure 3C, paragraph 0129); and a solar panel disposed between the photochromic lens and the microLED display (paragraph 0129 explains that the LED can be placed behind the glasses element, whereas the polarizer is the front of the optical elements in figures 3 and 5-8. As the solar panel is on the PCB, claim 12, Chelf shows configurations where the solar panel is interposed between the polarized lens and the LED element). As to claim 10: Chelf teaches that the photochromic lens is optically aligned with an eyebox (figures 1, 7). 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. 2. Claim 3 is rejected under 35 U.S.C. 103 as being unpatentable over Chelf (2023/0333392) as applied to claim 1, and further in view of Lore (2018/0081201). The teachings of Chelf are discussed above. As to claim 3: Chelf teaches the limitations of claim 1. Chelf is silent as to that the storage device is a supercapacitor. Lore teaches a solar powered glasses device wherein the storage device is a supercapacitor (paragraph 0120). It would have been obvious to one of ordinary skill in the art before the effective filing date of the instant application to combine the teachings of Chelf with the teachings of Lore so that the storage device is a supercapacitor because supercapacitors are commonly used in conjunction with photoelectric devices to store power without damaging batteries due to small fluctuations in the power input due to inconsistent light. Furthermore, it would not take undue testing to modify the battery of Chelf with the supercapacitor of Lore, and both references lie in a highly overlapping field of solar powered glasses. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID P TARDIF whose telephone number is (571)270-7810. The examiner can normally be reached on M-F 11AM-7:30PM. If the examiner cannot be reached by telephone, he can be reached through the following email address: david.tardif@uspto.gov If attempts to reach the examiner by telephone and email are unsuccessful, the examiner’s supervisor, Thomas Pham can be reached on (571)272-3689. 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 Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center for authorized users only. Should you have questions about access to Patent Center, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 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) Form at https://www.uspto.gov/patents/uspto-automated- interview-request-air-form. DAVID TARDIF Examiner Art Unit 2876 /DAVID TARDIF/ Examiner, Art Unit 2876 david.tardif@uspto.gov /MATTHEW MIKELS/ Primary Examiner, Art Unit 2876
Read full office action

Prosecution Timeline

Mar 08, 2024
Application Filed
Oct 02, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

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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
72%
Grant Probability
82%
With Interview (+10.2%)
3y 0m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 529 resolved cases by this examiner. Grant probability derived from career allowance rate.

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