Prosecution Insights
Last updated: July 17, 2026
Application No. 19/021,614

METHODS AND SYSTEMS FOR DETECTING SHADING FOR SOLAR TRACKERS

Non-Final OA §DP
Filed
Jan 15, 2025
Priority
May 18, 2018 — divisional of 10/892,703 +2 more
Examiner
PYO, KEVIN K
Art Unit
Tech Center
Assignee
Nextpower LLC
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
764 granted / 877 resolved
+27.1% vs TC avg
Moderate +11% lift
Without
With
+10.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
12 currently pending
Career history
893
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
71.5%
+31.5% vs TC avg
§102
8.5%
-31.5% vs TC avg
§112
13.9%
-26.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 877 resolved cases

Office Action

§DP
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-16 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-15 of U.S. Patent No. 12,231,079. Although the claims at issue are not identical, they are not patentably distinct from each other because the claimed invention of the instant application is a similar version of the claimed invention of the above identified U.S. Patent with the similar intended scope as shown below: Instant Application US 12,231,079 1. A method of operating a solar array, the method comprising: providing a plurality of solar trackers forming the solar array, each solar tracker comprising a plurality of solar modules configured to receive electromagnetic radiation from a Sun, the plurality of solar modules arranged to form a plurality of photo voltaic (PV) strings, each PV string comprising at least two solar modules, and each solar tracker comprising at least two PV strings; providing a tracker controller, the tracker controller configured to receive electrical power generated by the plurality of PV strings; detecting a plurality of power signals generated by the plurality of PV strings and communicated electrically from each of the plurality of PV strings to a plurality of power inputs of the tracker controller; determining a tilt angle associated with each PV string; determining that at least one of the plurality of PV strings is shaded based on one or more of the detected power signals being less than a threshold; and changing the tilt angle of one or more of the PV strings in response to determining that a portion of the plurality of PV strings is shaded. 1. A method of operating a solar tracker system, the method comprising: providing a tracker controller, the tracker controller configured to receive electrical power from a plurality of solar module, each solar module configured to receive electromagnetic radiation from a Sun, the plurality of solar modules arranged to form a plurality of photo voltaic (PV) strings, each PV string comprising at least two solar modules; detecting a plurality of power signals generated by the plurality of PV strings and communicated electrically from each of the plurality of PV strings to a plurality of power inputs of the tracker controller; determining a tilt angle associated with each PV string; determining that a portion of the plurality of PV strings is shaded based on one or more of the detected power signals being less than a threshold; and changing the tilt angle of one or more of the PV strings in response to determining that a portion of the plurality of PV strings is shaded. It is noted that claims 7-14 of the present application correspond to claims 2-9 of U.S. Patent No. 12,231,079; and claim 16 of the present application correspond to claim 10 of U.S. Patent No. 12,231,079. Allowable Subject Matter Claims 1-16 would be allowable if a timely filed terminal disclaimer would be submitted to overcome the outstanding double patenting rejection. The following is a statement of reasons for the indication of allowable subject matter: Although the prior art (i.e. Jeanty et al; US 2017/0187192; Fig.1) discloses the use of a plurality of solar trackers (125) comprising PV strings and a tracker controller (130, 150), it fails to disclose or make obvious the claimed features of detecting a plurality of power signal generated by a plurality of PV strings and communicated electrically from each of the plurality of PV strings to a plurality of power inputs of the tracker controller; determining a tilt angle; determining that at least one of the plurality of PV strings is shaded; and changing the tilt angle of one or more of the solar trackers in the manner recited in claim 1. Regarding claim 16, the prior art fails to disclose or make obvious a solar tracker system comprising, in addition to the other recited features of the claim, the details and functions of a plurality of solar trackers, a processor, a power supply and a plurality of power inputs in the manner recited in claim 16. The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Upfill-Brown (US 12,095,410) is cited for disclosing a solar tracker. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KEVIN K PYO whose telephone number is (571)272-2445. The examiner can normally be reached 9:00-5:30 PM. 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, Georgia Y Epps can be reached at 571-272-2328. 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. /KEVIN K PYO/Primary Examiner, Art Unit 2878
Read full office action

Prosecution Timeline

Jan 15, 2025
Application Filed
Jun 16, 2026
Non-Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD FOR MAPPING WAFERS IN A WAFER CARRIER
2y 2m to grant Granted Jul 14, 2026
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TRIANGULATION SENSOR
2y 2m to grant Granted Jul 14, 2026
Patent 12680368
DETECTOR MODULE FOR USE IN AN ENTRANCE SYSTEM
2y 2m to grant Granted Jul 14, 2026
Patent 12674739
FLOW CYTOMETER ALIGNMENT
2y 2m to grant Granted Jul 07, 2026
Patent 12669404
INSPECTING UNIT
1y 6m to grant Granted Jun 30, 2026
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
87%
Grant Probability
98%
With Interview (+10.8%)
2y 2m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 877 resolved cases by this examiner. Grant probability derived from career allowance rate.

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