Prosecution Insights
Last updated: April 19, 2026
Application No. 18/519,532

MULTI-USER COMMUNICATION METHOD AND RELATED COMMUNICATION APPARATUS

Non-Final OA §112
Filed
Nov 27, 2023
Examiner
ISLAM, ROWNAK
Art Unit
2474
Tech Center
2400 — Computer Networks
Assignee
Huawei Technologies Co., Ltd.
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
385 granted / 435 resolved
+30.5% vs TC avg
Moderate +14% lift
Without
With
+14.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
27 currently pending
Career history
462
Total Applications
across all art units

Statute-Specific Performance

§101
3.1%
-36.9% vs TC avg
§103
65.4%
+25.4% vs TC avg
§102
10.3%
-29.7% vs TC avg
§112
8.0%
-32.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 435 resolved cases

Office Action

§112
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 . DETAILED ACTION This office action is a response to application no. 18/519,532 filed on 11/27/2023. Claims 1 – 20 are pending and ready for examination. Priority This application is a continuation of International Application No. PCT/CN2022/095468, filed on May 27, 2022, which claims priority to Chinese Patent Application No. 202110595979.1, filed on May 29, 2021. Information Disclosure Statement The information disclosure statements (IDSs) submitted on 11/13/2024 and 01/20/2025 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claim Objections Claim 18 is objected to because of the following informalities: Claim 18 recites in line 7, “the second of the first frequency”. It should read as “the second half of the first frequency”. Appropriate correction is required. Claim Rejections - 35 USC § 112 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. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1 – 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 1 and 11 recite in last paragraph, the limitation “determining, by the communication device, phase precoding information based on the first information and the second information, wherein after precoding is performed based on the phase precoding information, and channel correlation between an equivalent channel of the second channel on the first frequency domain resource and an equivalent channel of the first channel on the first frequency domain resource is less than channel correlation between the second channel and the first channel on the first frequency domain resource ". The limitations are not clear about what effect/ consequence/ process is happening after precoding is performed. There is no flow of the statements between “wherein after precoding is performed based on the phase precoding information” and “channel correlation between …. frequency domain resource” in the claims. The limitation “equivalent channel” is not defined/ explained in the claims; therefore, it is not clear what does it mean by the equivalent channel. Accordingly, claims 1 and 11 are rejected under 35 U.S.C. 112(b). Claims 2 – 10 depend on claim 1 and claims 12 – 20 depend on claim 11; therefore, same rational applies to them as well. Therefore, claims 1 – 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph. Conclusion The prior arts made of record and not relied upon are considered pertinent to applicant's disclosure. Zhu et al. (Pub. No. US 2023/0199781 A1) – “SCHEDULING A GROUP OF USER EQUIPMENT BY A NETWORK CELL” discloses a method performed at a network node comprises: determining a first search space for a first terminal device, and a second search space for a second terminal device; determining resources for a first downlink channel for the first terminal device in the first search space, and resources for a second downlink channel for the second terminal device in the second search space; and transmitting a first message on the first downlink channel, and a second message on the second downlink channel. The determined resources for the first downlink channel at least partially overlap with the determined resources for the second downlink channel in time and/or frequency domain. The first terminal device and the second terminal device are scheduled with a manner of Multi-User Multiple-Input Multiple-Output, MU-MIMO. IMAMURA et al. (Pub. No. US 2013/0294217 A1) – “RADIO TRANSMITTER, RADIO COMMUNICATION SYSTEM, AND RADIO TRANSMISSION METHOD” discloses a transmission apparatus comprising a plurality of antennas, a scheduler configured to perform transmission scheduling in units of chunks each determined based on a prescribed frequency band and a prescribed time so as to transmit signals via the plurality of antennas, and a transmission circuit configured to apply phase rotations to signals, where a phase rotation difference between adjacent subcarriers in an antenna generated from the phase rotations is set to either a first value smaller than (n-1)/(Fc.Ts) or a second value larger than (n-1)/(Fc.Ts) where Fc denotes the frequency band width of the chunk, Ts denotes a length of time for an Orthogonal Frequency Division Multiplexing (OFDM) symbol and n denotes a number based on an antenna index of the antenna in which the phase rotation was applied to the signals. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROWNAK ISLAM whose telephone number is (571)272-8009. The examiner can normally be reached on Monday - Friday 8:30 am - 6 pm (EST). If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Michael Thier can be reached on 571-272-2832. 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. /ROWNAK ISLAM/ Primary Examiner, Art Unit 2474
Read full office action

Prosecution Timeline

Nov 27, 2023
Application Filed
Dec 18, 2023
Response after Non-Final Action
Mar 20, 2026
Non-Final Rejection — §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
88%
Grant Probability
99%
With Interview (+14.4%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 435 resolved cases by this examiner. Grant probability derived from career allow rate.

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