Prosecution Insights
Last updated: October 27, 2026
Application No. 19/049,821

ENTROPY BASED SOFTWARE CLOCK RECOVERY FOR REAL-EQUIVALENT-TIME OSCILLOSCOPES

Non-Final OA §112
Filed
Feb 10, 2025
Priority
Feb 22, 2024 — provisional 63/556,827
Examiner
SANGHERA, JAS A
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Tektronix Inc.
OA Round
1 (Non-Final)
95%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 95% — above average
95%
Career Allowance Rate
1114 granted / 1177 resolved
+26.6% vs TC avg
Minimal +5% lift
Without
With
+4.9%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 8m
Avg Prosecution
22 currently pending
Career history
1205
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
26.1%
-13.9% vs TC avg
§112
27.9%
-12.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1177 resolved cases

Office Action

§112
DETAILED ACTION Notice to Applicant 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . 2. Claims 1-20 are pending. Specification 3. The disclosure is objected to because, in paragraph 19 on page 4, it contains an embedded hyperlink and/or other form of browser-executable code (“https://en.wikipedia.org/wiki/Entropy”). Applicant is required to delete the embedded hyperlink and/or other form of browser-executable code; references to websites should be limited to the top-level domain name without any prefix such as http:// or other browser-executable code. See MPEP § 608.01. Claim Rejections - 35 USC § 112 4. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. 5. Claims 17-19 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. Per claim 17, the limitation “the two-dimensional histograms” lacks sufficient antecedent basis. Appropriate correction is required. To note claim 11, from which claim 17 depends, recites the limitation “candidate histograms.” Per claim 18, the limitation “the two-dimensional histograms” lacks sufficient antecedent basis. Appropriate correction is required. To note claim 11, from which claim 18 depends, recites the limitation “candidate histograms.” Claim 19 is consequently rejected due to its dependence on claim 18. Allowable Subject Matter 6. Claims 1-16 and 20 are deemed allowable. The following subject matter substantially described in independent claims 1 and 11 is not believed to be taught or suggested by the prior art of record: determining a set of candidate unit intervals by generating corresponding candidate histograms using the candidate unit intervals; determining a best unit interval from the candidate unit intervals based upon entropy measures of each candidate histogram; and reconstructing a representation of the signal under test using the digital samples and the best unit interval using an oscilloscope having a Nyquist frequency lower than an analog bandwidth. Pertinent Prior Art 7. Tan – US 2021/0263085 This document discloses a real-equivalent-time oscilloscope having a Nyquist frequency lower than an analog bandwidth that is configured to reconstruct a signal under test based on a determined frequency of the signal under test, a pattern length of the signal under test, and/or a sample rate without a trigger (Abstract). However, this document is silent on, in particular, determining a set of candidate unit intervals by generating corresponding candidate histograms using the candidate unit intervals; and determining a best unit interval from the candidate unit intervals based upon entropy measures of each candidate histogram, as described in independent claims 1 and 11 of the present application. Conclusion 8. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAS A. SANGHERA whose telephone number is (571)272-4787. The examiner can normally be reached M-Th, alt. Fri, 8-5 EST. 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, WALTER LINDSAY can be reached at (571) 272-1674. 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. /JAS A SANGHERA/Primary Examiner, Art Unit 2852
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Prosecution Timeline

Feb 10, 2025
Application Filed
Sep 11, 2026
Non-Final Rejection mailed — §112 (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

1-2
Expected OA Rounds
95%
Grant Probability
99%
With Interview (+4.9%)
1y 8m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1177 resolved cases by this examiner. Grant probability derived from career allowance rate.

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