Prosecution Insights
Last updated: April 19, 2026
Application No. 18/440,880

FREQUENCY SPREADING FOR HIGH-PERFORMANCE COMMUNICATIONS

Non-Final OA §112
Filed
Feb 13, 2024
Examiner
AHN, SUNG S
Art Unit
2631
Tech Center
2600 — Communications
Assignee
MaxLinear, Inc.
OA Round
3 (Non-Final)
78%
Grant Probability
Favorable
3-4
OA Rounds
2y 4m
To Grant
91%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
366 granted / 467 resolved
+16.4% vs TC avg
Moderate +12% lift
Without
With
+12.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
9 currently pending
Career history
476
Total Applications
across all art units

Statute-Specific Performance

§101
6.3%
-33.7% vs TC avg
§103
52.2%
+12.2% vs TC avg
§102
15.7%
-24.3% vs TC avg
§112
16.7%
-23.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 467 resolved cases

Office Action

§112
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 04 November 2025 has been entered. Response to Amendment This action is in reply to the Applicant’s amendments filed 04 November 2025. Claims 1 and 11 have been amended. Claims 1-20 are currently pending and have been examined. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for pre-AIA the inventor(s), at the time the application was filed, had possession of the claimed invention. The claims 1 and 11 discloses the limitation of the “such that each modulation symbol of the plurality of modulation symbols is mapped across a contiguous subset of a plurality of subcarriers that are allocated to a single user for an uplink transmission” which was not described in the specification (Fig. 5, paragraph [0056, 0057]) in such way as to reasonably convey to one skilled in the relevant art as the specification only discloses the generally known spreading symbols to the plurality of subcarriers. Claims 2-10 and 12-20 are rejected based on the rejected independent claims 1 and 11. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUNG S AHN whose telephone number is (571)270-3706. The examiner can normally be reached on M-F: 9-6. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Hannah Wang can be reached on 571-272-9018. 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. /SUNG S AHN/Examiner, Art Unit 2631 (571)-270-3706 sung.ahn@uspto.gov
Read full office action

Prosecution Timeline

Feb 13, 2024
Application Filed
Sep 30, 2024
Non-Final Rejection — §112
Mar 03, 2025
Response Filed
May 31, 2025
Final Rejection — §112
Nov 04, 2025
Request for Continued Examination
Nov 13, 2025
Response after Non-Final Action
Nov 15, 2025
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Mar 31, 2026
Patent 12580800
Orthogonal Multiple Access and Non-Orthogonal Multiple Access
2y 5m to grant Granted Mar 17, 2026
Patent 12568001
INFORMATION REPORTING METHOD AND APPARATUS, FIRST DEVICE, AND SECOND DEVICE
2y 5m to grant Granted Mar 03, 2026
Patent 12556232
COMMUNICATION METHOD AND COMMUNICATION APPARATUS
2y 5m to grant Granted Feb 17, 2026
Patent 12549226
COMMUNICATION SYSTEM DESIGN METHOD BASED ON INTELLIGENT OMNI-SURFACE
2y 5m to grant Granted Feb 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
78%
Grant Probability
91%
With Interview (+12.3%)
2y 4m
Median Time to Grant
High
PTA Risk
Based on 467 resolved cases by this examiner. Grant probability derived from career allow rate.

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