Prosecution Insights
Last updated: October 04, 2026
Application No. 18/388,703

METHOD AND APPARATUS FOR DETERMINING A FREQUENCY RELATED PARAMETER OF A FREQUENCY SOURCE USING PREDICTIVE CONTROL

Non-Final OA §103
Filed
Nov 10, 2023
Priority
Nov 10, 2022 — provisional 63/424,185
Examiner
MAKHDOOM, SAMARINA
Art Unit
3648
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Focal Point Positioning Limited
OA Round
3 (Non-Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
2m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
95 granted / 132 resolved
+20.0% vs TC avg
Strong +29% interview lift
Without
With
+29.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
79 currently pending
Career history
202
Total Applications
across all art units

Statute-Specific Performance

§101
2.3%
-37.7% vs TC avg
§103
73.1%
+33.1% vs TC avg
§102
23.3%
-16.7% vs TC avg
§112
1.2%
-38.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 132 resolved cases

Office Action

§103
DETAILED ACTION Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on June 22, 2026 has been entered. Claim 1, 8, and 15 are amended. Claims 1-20 are pending this application. 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. Claims 1-5, 7-12, and 14-19 are rejected under 35 U.S.C. 103 as being unpatentable over Faragher et al (US 2019/0011569 A1) in view of Leclercq et al (US 2012/0218146 A1). Regarding Claim 1, Faragher teaches a method for determining a frequency related parameter of a local frequency source within a receiver, comprising [0026]: receiving, at an antenna of the receiver, a plurality of signals from a plurality of remote sources [0025 for receivers with antennas to receiver with antennas]; generating motion compensated correlation results using a determined motion of the antenna of the receiver, the received plurality of signals [0024, 0031, 0033], and a local signal derived from the local frequency source [0026 for a local oscillator]; using predictive control to predict an effect on the frequency related parameter of the local frequency source [0026 for predicting phase]; phase compensating the motion compensated correlation results to produce phase compensated correlation results using a plurality of phasor sequences that are based on the predicted effect on the frequency related parameter of the local frequency source [0032, 0034]; and jointly analysing the phase compensated correlation results associated with the plurality of remote sources to determine a frequency model for the local frequency source [0025-0026 and 0080]. Faragher fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. Leclercq has a GNSS receiver includes a sensing element for detecting an environmental condition (abstract) and teaches caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source [0015 for equipped with a temperature sensor to receive periodically temperature information and compute the temperature difference to adjust its power-off duration before the reference frequency of the local reference oscillator drifts]. It would have been obvious to a person of ordinary skill in the art before the effective filling date of the applicant’s invention for modifying the frequency oscillating techniques, as disclosed by Faragher, further including the drift calculations as taught by Leclercq for the purpose of o dynamically calculate time intervals during which the receiver performs tracking operations [Leclercq, 0015]. Regarding Claim 8, Faragher teaches an apparatus for determining a frequency related parameter of a frequency source within a receiver, comprising [0025-0026]: at least one processor and at least one memory for storing programs and instructions that, when executed by the at least one processor, configures the apparatus to [0028 for server and software]: receive, at an antenna of the receiver, a plurality of signals from a plurality of remote sources [0025 for receivers with antennas to receiver with antennas]; generate motion compensated correlation results using a determined motion of the antenna of the receiver [0024, 0031, 0033], the received plurality of signals, and a local signal derived from the local frequency source [0026 for a local oscillator]; use predictive control to predict effect on the the frequency related parameter of the local frequency source [0026 for predicting phase]; phase compensate the motion compensated correlation results to produce phase compensated correlation results using a plurality of phasor sequences that are based on the predicted effect on the frequency related parameter of the local frequency source [0032, 0034]; and jointly analyze the phase compensated correlation results associated with the plurality of remote sources to determine a frequency model for the local frequency source [0025-0026 and 0080]. Faragher fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. Leclercq has a GNSS receiver includes a sensing element for detecting an environmental condition (abstract) and teaches caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source [0015 for equipped with a temperature sensor to receive periodically temperature information and compute the temperature difference to adjust its power-off duration before the reference frequency of the local reference oscillator drifts]. It would have been obvious to a person of ordinary skill in the art before the effective filling date of the applicant’s invention for modifying the frequency oscillating techniques, as disclosed by Faragher, further including the drift calculations as taught by Leclercq for the purpose of o dynamically calculate time intervals during which the receiver performs tracking operations [Leclercq, 0015]. Regarding Claim 15, Faragher teaches a system for determining a frequency related parameter of a frequency source within a receiver, comprising [0025-0026]: a receiver including an antenna and a local frequency source [0025 for receivers with antennas to receiver with antennas]; at plurality of remote sources of a plurality of signals, the plurality of signals including at least one reference frequency signal [0030, 0037]; an apparatus including at least one processor and at least one memory for storing programs and instructions that, when executed by the at least one processor, configures the apparatus to [0025]: receive, at the antenna of the receiver, a plurality of signals from the plurality of remote sources 0025, and 0234]; generate motion compensated correlation results using a determined motion of the antenna of the receiver, the received plurality of signals [0024, 0031, 0033], and a local signal derived from the local frequency source [0026 for a local oscillator]; use predictive control to predict an effect on the frequency related parameter of the local frequency source [0026 for predicting phase]; phase compensate the motion compensated correlation results to produce phase compensated correlation results using a plurality of phasor sequences that are based on the predicted an effect on frequency related parameter of the local frequency source [0032, 0034]; and jointly analyze the phase compensated correlation results associated with the plurality of remote sources to determine a frequency offset of the local frequency source [0025-0026 and 0080]. Faragher fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. Leclercq has a GNSS receiver includes a sensing element for detecting an environmental condition (abstract) and teaches caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source [0015 for equipped with a temperature sensor to receive periodically temperature information and compute the temperature difference to adjust its power-off duration before the reference frequency of the local reference oscillator drifts]. It would have been obvious to a person of ordinary skill in the art before the effective filling date of the applicant’s invention for modifying the frequency oscillating techniques, as disclosed by Faragher, further including the drift calculations as taught by Leclercq for the purpose of o dynamically calculate time intervals during which the receiver performs tracking operations [Leclercq, 0015]. Regarding Claim 2, Faragher teaches adjusting a frequency of the local frequency source based on at least one of the predicted effect on the frequency related parameter or the determined frequency model [0027 for predicting phase (frequency related parameter) for local oscillator]. Regarding Claim 3, 10, and 17, Faragher teaches at least one of the plurality of remote sources comprises a reference frequency and the frequency of the local frequency source is adjusted to coincide with the reference frequency [0080-0081]. Regarding Claim 4, 11, and 18, Faragher teaches predictive control comprises monitoring at least one of an environmental parameter of an environment in which the receiver is operating or an operating parameter of the receiver [0038 for using sensors (monitoring) receivers environment (barometric and geomagnetic bearings)]. Regarding Claim 5, 12, and 19, Faragher teaches the environmental parameter comprises [0038 for using sensors (monitoring) receiver’s environment (barometric and geomagnetic bearings)]. Faragher fails to explicitly teach at least one of a temperature of the environment in which the receiver is operating or a rate of change of the temperature of the environment in which the receiver is operating, and the operating parameter comprises a turning on or off of a component associated with the receiver. Leclercq has a GNSS receiver includes a sensing element for detecting an environmental condition (abstract) and teaches at least one of a temperature of the environment in which the receiver is operating or a rate of change of the temperature of the environment in which the receiver is operating, and the operating parameter comprises a turning on or off of a component associated with the receiver [0015 for equipped with a temperature sensor to receive periodically temperature information and compute the temperature difference to adjust its power-off duration before the reference frequency of the local reference oscillator drifts and using Doppler Shifts]. It would have been obvious to a person of ordinary skill in the art before the effective filling date of the applicant’s invention for modifying the frequency oscillating techniques, as disclosed by Faragher, further including the drift calculations as taught by Leclercq for the purpose of o dynamically calculate time intervals during which the receiver performs tracking operations [Leclercq, 0015]. Regarding Claim 7 and 14, Faragher teaches the frequency model comprises a frequency offset between a frequency of the local frequency source and a reference frequency of at least one of the signals from the plurality of the remote sources [0009 for estimating offset, 0026-0027]. Regarding Claim 9 and 16, Faragher teaches the apparatus is further configured to: adjust a frequency of the local frequency source based on at least one of the predicted effect on the frequency related parameter or the determined frequency offset [0112-0113]. Claims 6, 13, and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Faragher et al (US 2019/0011569 A1) and Leclercq et al (US 2012/0218146 A1) as applied to claim 1, 8, and 15, above, in further view of He (US 2013/0321048 A1). Regarding Claim 6, 13, and 20, Faragher teaches using a machine learning model [0177, 0208]. However, Faragher fails to explicitly teach a frequency error related to the predicted effect on the frequency related parameter is determined using at least one of a machine learning model trained to determine a frequency error based on a change in at least one monitored parameter affecting the frequency of the local frequency source or a stored look up table that associates a frequency error with a change in at least one monitored parameter affecting the frequency of the local frequency source. He has a communication system comprises a crystal oscillator configured to output a reference clock (abstract) and teaches a frequency error related to the predicted effect on the frequency related parameter is determined using at least one of a machine learning model trained to determine a frequency error based on a change in at least one monitored parameter affecting the frequency of the local frequency source or a stored look up table that associates a frequency error with a change in at least one monitored parameter affecting the frequency of the local frequency source [0140-0142 for using learning algorithm with temperature compensation and frequency]. It would have been obvious to a person of ordinary skill in the art before the effective filling date of the applicant’s invention for modifying the frequency oscillating techniques, as disclosed by Faragher, further including the temperature calculations as taught by He for calibrating the crystal resonator's frequency deviation versus temperature characteristic [He, 0142]. Response to Arguments Applicant’s arguments with respect to claims 1-20 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. In applicant’s arguments page 1, last paragraph of applicant’s arguments, the applicant states that Faragher fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. The examiner thanks the applicant for the amendments. New reference Leclercq teaches this limitation [Leclercq, 0015 for equipped with a temperature sensor to receive periodically temperature information and compute the temperature difference to adjust its power-off duration before the reference frequency of the local reference oscillator drifts]. In applicant’s arguments page 4, second paragraph of applicant’s arguments, the applicant states that Faragher does not teach using predictive control to predict an effect on the frequency one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. The examiner respectfully disagrees, Faragher states predictive control by the offset calculated by the local oscillator offset determination module [Faragher, 0081], determined initially by the rough awareness of location of the receiver and location of the reference source. In applicant’s arguments page 5, first paragraph of applicant’s arguments, the applicant states that Faragher fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. See paragraph 19 above of this office action. In applicant’s arguments page 4, fourth paragraph of applicant’s arguments, the applicant states that He fails to explicitly teach caused by at least one sensed environmental condition unrelated to the determined motion of the antenna affecting the stability of the local frequency source. The examiner respectfully disagrees, Leclercq covers this limitation [Leclercq, 0015]. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SAMARINA MAKHDOOM whose telephone number is (703)756-1044. The examiner can normally be reached Monday – Thursdays from 8:30 to 5:30 pm eastern time. 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, Resha Desai can be reached on 571-270-7792 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. /SAMARINA MAKHDOOM/ Examiner, Art Unit 3648
Read full office action

Prosecution Timeline

Nov 10, 2023
Application Filed
Nov 25, 2025
Non-Final Rejection mailed — §103
Mar 25, 2026
Response Filed
Apr 22, 2026
Final Rejection mailed — §103
Jun 22, 2026
Response after Non-Final Action
Jul 09, 2026
Request for Continued Examination
Jul 18, 2026
Response after Non-Final Action
Jul 22, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12748205
POSITIONING METHOD USING WIRELESS COMMUNICATION, AND ELECTRONIC DEVICE FOR SUPPORTING SAME
2y 6m to grant Granted Sep 29, 2026
Patent 12742893
Device for determining the attitude of a carrier, and associated system for assisting with the piloting of a carrier and determination method
3y 1m to grant Granted Sep 22, 2026
Patent 12744326
RADIO WAVE ABSORBER FOR HIGH-FREQUENCY COMMUNICATION DEVICE
2y 5m to grant Granted Sep 22, 2026
Patent 12738665
RADIO WAVE ABSORBER AND RADIO WAVE ABSORBING COMPOSITION
4y 6m to grant Granted Sep 15, 2026
Patent 12736655
SENSOR FUSION-BASED GCS FOR AESA RADAR VIA ADAPTIVE PATTERN NULL FORMING
3y 0m to grant Granted Sep 15, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
72%
Grant Probability
99%
With Interview (+29.3%)
3y 0m (~2m remaining)
Median Time to Grant
High
PTA Risk
Based on 132 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month