Prosecution Insights
Last updated: April 19, 2026
Application No. 18/848,728

METHODS AND APPARATUSES TO FACILITATE LARGER NUMBER OF DMRS PORTS

Non-Final OA §102
Filed
Sep 19, 2024
Examiner
PUENTE, EVA YI ZHENG
Art Unit
2632
Tech Center
2600 — Communications
Assignee
Lenovo (Beijing) Limited
OA Round
2 (Non-Final)
90%
Grant Probability
Favorable
2-3
OA Rounds
2y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allow Rate
693 granted / 772 resolved
+27.8% vs TC avg
Moderate +9% lift
Without
With
+8.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
20 currently pending
Career history
792
Total Applications
across all art units

Statute-Specific Performance

§101
10.3%
-29.7% vs TC avg
§103
30.7%
-9.3% vs TC avg
§102
28.4%
-11.6% vs TC avg
§112
18.5%
-21.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 772 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 . Response to Arguments Applicant’s arguments, see Amendment, filed 1/15/26, with respect to the rejections of clams 1-15 and 17-21 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made. Claim Rejections - 35 USC § 102 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. Claims 1, 14, 15, and 21 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Sun et al (US 2025/0247188). a) Regarding claims 1 and 15, Sun et al disclose a user equipment (UE)/processor for wireless communication (110 in Fig. 2), comprising: at least one memory (210); and at least one processor (205) is coupled with the at least one memory and configured to cause the UE to: receive a configuration for a demodulation reference signal (DMRS) that includes a DMRS type (905 in Fig. 9), wherein a maximum number of DMRS ports supported by DMRS type 1 is eight for single-symbol DMRS and sixteen for double-symbol DMRS (Pub [0062]), and the maximum number of DMRS ports supported by DMRS type 2 is twelve for single-symbol DMRS and twenty-four for double-symbol DMRS (Pub [0115]); and receive a downlink control information (DCI) indicating one or more DMRS ports for a scheduled transmission (Pub [0086], Pub [0088]), wherein the scheduled transmission is a physical uplink shared channel (PUSCH) transmission or a physical downlink shared channel (PDSCH) transmission (Pub [0090]), and the PUSCH transmission or the PDSCH transmission is with a frequency division multiplexing (FDM) scheme (Pub [0015], [0017]), and wherein a scheduled number of physical resource blocks (PRBs) is a multiple of four and scheduled resource blocks (RBs) of the PDSCH transmission is according to an even number of different transmission configuration indication (TCI) states (the PUSCH and PDSCH are optional by “or”, and therefore the underlined portion for PDSCH is also optional and not given any patentable weights). b) Regarding claims 14 and 21, Sun et al disclose a base station (BS) for wireless communication (300 in Fig. 3), comprising: at least one memory (310); and at least one processor is coupled with the at least one memory (305) and configured to cause the BS to (Fig. 9): transmit a configuration for a demodulation reference signal (DMRS) that includes a DMRS type (905 in Fig. 9), wherein a maximum number of DMRS ports supported by DMRS type 1 is eight for single-symbol DMRS and sixteen for double-symbol DMRS (Pub [0062]), and the maximum number of DMRS ports supported by DMRS type 2 is twelve for single-symbol DMRS and twenty-four for double-symbol DMRS (Pub [0115]); and transmit a downlink control information (DCI) indicating one or more DMRS ports for a scheduled transmission (Pub [0086], Pub [0088]), wherein the scheduled transmission is a physical uplink shared channel (PUSCH) transmission or a physical downlink shared channel (PDSCH) transmission (Pub [0090]), and the PUSCH transmission or the PDSCH transmission is with a frequency division multiplexing (FDM) scheme (Pub [0015], [0017]), and wherein a scheduled number of physical resource blocks (PRBs) is a multiple of four and scheduled resource blocks (RBs) of the PDSCH transmission is according to an even number of different transmission configuration indication (TCI) states (the PUSCH and PDSCH are optional by “or”, and therefore the underlined portion for PDSCH is also optional and not given any patentable weights). Allowable Subject Matter Claims 2-13 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. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Eva Y Puente whose telephone number is 571-272-3049. The examiner can normally be reached on M-F, 7:30 AM to 5:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Chieh Fan can be reached on 571-272-3042. 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). March 17, 2026 /EVA Y PUENTE/ Primary Examiner, Art Unit 2632
Read full office action

Prosecution Timeline

Sep 19, 2024
Application Filed
Nov 12, 2025
Non-Final Rejection — §102
Jan 15, 2026
Response Filed
Mar 17, 2026
Non-Final Rejection — §102
Mar 19, 2026
Applicant Interview (Telephonic)
Apr 13, 2026
Interview Requested

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12580607
ACTIVE SINGLE-ENDED TRANSMISSION CABLE
2y 5m to grant Granted Mar 17, 2026
Patent 12574080
PRECODING WEIGHT CALCULATION METHOD AND RELATED APPARATUS
2y 5m to grant Granted Mar 10, 2026
Patent 12574155
SIGNAL SENDING METHOD AND APPARATUS
2y 5m to grant Granted Mar 10, 2026
Patent 12556210
POWER EFFICIENT RECEIVER ARCHITECTURE
2y 5m to grant Granted Feb 17, 2026
Patent 12542540
CONTROL UNIT FOR TRANSMISSION SYSTEM
2y 5m to grant Granted Feb 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

2-3
Expected OA Rounds
90%
Grant Probability
99%
With Interview (+8.8%)
2y 4m
Median Time to Grant
Moderate
PTA Risk
Based on 772 resolved cases by this examiner. Grant probability derived from career allow 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