Prosecution Insights
Last updated: May 04, 2026
Application No. 18/621,185

Fast Noise Detection

Non-Final OA §102
Filed
Mar 29, 2024
Examiner
LEE, JOHN J
Art Unit
2649
Tech Center
2600 — Communications
Assignee
Silicon Laboratories Inc.
OA Round
1 (Non-Final)
93%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 93% — above average
93%
Career Allowance Rate
1194 granted / 1287 resolved
+30.8% vs TC avg
Moderate +6% lift
Without
With
+6.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
24 currently pending
Career history
1311
Total Applications
across all art units

Statute-Specific Performance

§101
7.0%
-33.0% vs TC avg
§103
24.7%
-15.3% vs TC avg
§102
38.5%
-1.5% vs TC avg
§112
7.3%
-32.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1287 resolved cases

Office Action

§102
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 § 102 1. 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)(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. 2. Claims 1-9 and 14-16 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Li et al. (US 2024/0188124). Regarding claim 1, Li teaches a noise detector (abstract Fig. 2, and pages 2, paragraphs 29). Li teaches that a sample counter to count a number of data points received, wherein each data point represents a frequency value (page 1, paragraphs 4 – 6 and Fig. 1, 2, where teaches receiver may further include a counter configured to generate a first count of frequency deviation samples exceeding the predetermined threshold frequency in N frequency deviation samples of the received signal, and the adaptive number may be N in response to the first count being greater than or equal to a predetermined threshold count and the adaptive number may be 2×N in response to the first count being less than the predetermined threshold count), a frequency comparator to compare each data point to an expected range of values, and to detect frequency outliers as those data points having a frequency value outside the expected range of values (Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50, where teaches comparing each frequency deviation sample in the window to a predetermined frequency deviation threshold and counts how many frequency deviation samples of the window exceed the predetermined frequency deviation threshold, and comparing and updating outputs (e.g., an indication that the current window of frequency deviation samples includes BLE1M, BLE2M, or Zigbee data) and stores the window for use by signal detector based on the current window of samples), a frequency outlier counter to count a number of frequency outliers (Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50, where teaches noise detector compares each frequency deviation sample in the window to a predetermined frequency deviation threshold and counts how many frequency deviation samples of the window exceed the predetermined frequency deviation threshold (e.g., using a counter or control logic)), a threshold selector to select a threshold based on the number of data points received (Fig. 5, 11 and pages 5, paragraphs 47 – pages 7, paragraphs 56, where teaches determining how many frequency deviation samples of the two windows have values that exceed the predetermined threshold frequency value to generate the combined count based on a count of the number of continuous frequency deviation samples in the window that have a frequency deviation below a predetermined frequency deviation threshold), a noise comparator to perform a comparison of the number of frequency outliers to the threshold, wherein, if the number of frequency outliers is greater than the threshold, noise is detected (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50, where teaches receiver may further include a counter configured to generate a first count of frequency deviation samples exceeding the predetermined threshold frequency in N frequency deviation samples of the received signal, and the adaptive number may be N in response to the first count being greater than or equal to a predetermined threshold count, and comparing each frequency deviation sample in the window to a predetermined frequency deviation threshold and counts how many frequency deviation samples of the window exceed the predetermined frequency deviation threshold, and comparing and updating outputs (e.g., an indication that the current window of frequency deviation samples includes BLE1M, BLE2M, or Zigbee data). Regarding claim 2, Li teaches that the threshold increases for greater numbers of data points received (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 43 – pages 5, paragraphs 50). Regarding claim 3, Li teaches that the incoming data points are grouped into windows, wherein the threshold is selected based on a number of windows received (Fig. 5, 11 and pages 5, paragraphs 47 – pages 7, paragraphs 56). Regarding claim 4, Li teaches that the frequency outlier counter counts a total number of frequency outliers detected in all of the windows (Fig. 5, 11 and pages 5, paragraphs 47 – pages 7, paragraphs 56). Regarding claim 5, Li teaches that each window comprises 4 microseconds (Fig. 5, 11 and pages 5, paragraphs 45 – pages 6, paragraphs 51). Regarding claim 6, Li teaches that the threshold comparator performs the comparison after each window is completely filled (Fig. 5, 11 and pages 5, paragraphs 47 – pages 7, paragraphs 56). Regarding claim 7, Li teaches that a segment counter, wherein the frequency outlier counter counts a number of frequency outliers per segment (Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50). Regarding claim 8, Li teaches that the noise comparator performs the comparison of the number of frequency outliers received in the last N segments to the threshold (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 43 – pages 5, paragraphs 50). Regarding claim 9, Li teaches that N is initially a first value and changes to a second value, larger than the first value (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 43 – pages 5, paragraphs 50). Regarding claim 14, Li teaches all the limitation as discussed in claims 1 and 8. Furthermore, Li further teaches that a window/segment counter to group the incoming data points into a plurality of segments (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 43 – pages 5, paragraphs 50, where teaches noise detector for counting number of windows), a frequency outlier counter to count a number of frequency outliers per segment (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 43 – pages 5, paragraphs 50, where teaches counting number of frequency deviation samples per window), and a noise comparator to perform a comparison of the number of frequency outliers in a last N segments to a threshold, wherein, if the number of frequency outliers is greater than the threshold, noise is detected (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50, where teaches receiver may further include a counter configured to generate a first count of frequency deviation samples exceeding the predetermined threshold frequency in N frequency deviation samples of the received signal, and the adaptive number may be N in response to the first count being greater than or equal to a predetermined threshold count, and comparing each frequency deviation sample in the window to a predetermined frequency deviation threshold and counts how many frequency deviation samples of the window exceed the predetermined frequency deviation threshold, and comparing and updating outputs (e.g., an indication that the current window of frequency deviation samples includes BLE1M, BLE2M, or Zigbee data). Regarding claim 15, Li teaches all the limitation as discussed in claim 14. Furthermore, Li further teaches that N is constant (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50). Regarding claim 16, Li teaches all the limitation as discussed in claim 14. Furthermore, Li further teaches that N is initially a first value and changes to a second value, larger than the first value (page 1, paragraphs 4 – 6, Fig. 5, 11 and pages 4, paragraphs 45 – pages 5, paragraphs 50). Allowable Subject Matter 3. Claims 10-13 and 17-20 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The prior art of record fails to disclose the limitation “a receive circuit to generate the incoming date points, a demodulator to detect a packet and receive the packet, and a scheduler in communication with the noise detector and the demodulator, wherein the scheduler changes a frequency channel of the demodulator so as to scan multiple channels sequentially” as specified the claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Wallace et al. (US 2008/0002794) discloses Single-Burst Acquisition for Wireless Communication System. Zhibo et al. (US 2021/0006448) discloses Packet Detection and Timing Synchronization for High Performance Wireless Communication in Substation Automation. Information regarding...Patent Application Information Retrieval (PAIR) system... at 866-217-9197 (toll-free)." Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOHN J LEE whose telephone number is (571)272-7880. The examiner can normally be reached on Mon-Fri (8:00am-5:00pm). 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, Yuwen Pan can be reached on 571-272-7855. 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 the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. J.L April 16, 2026 John J Lee /JOHN J LEE/ Primary Examiner, Art Unit 2649
Read full office action

Prosecution Timeline

Mar 29, 2024
Application Filed
Apr 16, 2026
Non-Final Rejection — §102 (current)

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Prosecution Projections

1-2
Expected OA Rounds
93%
Grant Probability
99%
With Interview (+6.5%)
2y 2m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1287 resolved cases by this examiner. Grant probability derived from career allowance rate.

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