Prosecution Insights
Last updated: April 19, 2026
Application No. 18/552,518

NEW RADIO POSITIONING REFERENCE SIGNAL ENHANCEMENTS

Final Rejection §103
Filed
Sep 26, 2023
Examiner
ROUDANI, OUSSAMA
Art Unit
2413
Tech Center
2400 — Computer Networks
Assignee
InterDigital Patent Holdings, Inc.
OA Round
2 (Final)
79%
Grant Probability
Favorable
3-4
OA Rounds
3y 0m
To Grant
88%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
369 granted / 465 resolved
+21.4% vs TC avg
Moderate +8% lift
Without
With
+8.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
27 currently pending
Career history
492
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
51.5%
+11.5% vs TC avg
§102
22.7%
-17.3% vs TC avg
§112
13.4%
-26.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 465 resolved cases

Office Action

§103
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, filed on 12/11/2025, have been fully considered but are moot in view of new ground(s). Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 21, 23-29, 31-32, 34-42 is/are rejected under 35 U.S.C. 103 as being unpatentable over Rao et al. (US 20230379860) in view of Fischer et al. (US 20190037338). Regarding claim 21, Rao discloses a wireless transmit/receive unit (WTRU) comprising a processor, communication circuitry, a memory, and computer-executable instructions stored in the memory (Fig. 1A) which, when executed by the processor, cause the WTRU to: receive a first Positioning Reference Signal (PRS) configuration comprising an indication of PRS reconfiguration criteria; receive, from a base station (gNB), a first PRS in accordance with the first PRS configuration (Figs. 2-7. WTRU may be initially configured with one or more PRS and/or SRSp configurations. The different PRS/SRSp (pre)configurations may be assigned with an identifier. In addition, the WTRU may also be configured with a positioning validity tag associated with the PRS/SRSp configurations; [0205]); perform one or more measurements of the first PRS (the WTRU may verify the conditions in the validity tag to determine if the (pre)configured PRS/SRSp is still valid; [0209]); if the measurements meet the PRS reconfiguration criteria, send to an apparatus performing a Location Management Function (LMF), a PRS reconfiguration request (if the positioning measurement accuracy (e.g., RSRP level of a PRS measurement) is lower than a threshold, the WTRU may perform a first positioning mode of operation; otherwise, the WTRU may perform a second positioning mode of operation. The positioning measurement accuracy metric may include at least one of RSRP, L1-RSRP, existence of LoS path, beam quality, number of beams used for PRS transmission, etc; [0150-0152]. In the case when at least one of the conditions in the validity tag is not satisfied, the WTRU may send a request for reconfiguring the PRS/SRS configurations; [0209]); receive, from the LMF, a second PRS configuration after sending the PRS reconfiguration request; and receive, from the gNB, a second PRS in accordance with the second PRS configuration (The WTRU may receive the PRS/SRSp (re)configurations upon determining the expiry of the validity tag; [0209]). Rao does not expressly disclose a PRS reconfiguration request comprising information associated with an emergency communication process involving the WTRU. In an analogous art, Fischer discloses a PRS reconfiguration request comprising information associated with an emergency communication process involving the WTRU (on-demand PRS scheduling can also be supported by a BS based on the priority of demand. For example, a request by a UE 105 for increased resource allocation for PRS may only be granted by a BS when the request is associated with a priority service like an emergency call; [0057]). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to add the features taught by Fischer into the system of Rao in order to reduce the amount of resource usage by a network and/or a mobile device to achieve a preferred level of location support (Fischer; [0002]). Regarding claim 23, the combination of Rao and Fischer, particularly Rao discloses wherein the indication of priority indicates a priority of the PRS reconfiguration request with respect to at least one other PRS reconfiguration request to be processed by the LMF (WTRU may be assigned with a priority value associated with an SRB when sending measurement reports and/or location information to the network in small data transmission (SDT) while in RRC Inactive/idle mode. For sending the measurement report and/or location information in an SDT to the RAN/LMF via the control plane (via AMF) in one or more NAS messages/PDUs, the WTRU may use the priority value assigned to either SRB1, SRB2 or any SRB; [0361]). Regarding claim 24, the combination of Rao and Fischer, particularly Rao discloses cause the WTRU to calculate a position of the WTRU based on the second PRS (Upon reception of an indication for positioning in a paging occasion, the WTRU may determine the related configuration for PRS or SRSp, perform the related positioning measurements, and/or report the related position or positioning report (part of a PUSCH transmission in a RACH procedure or on a configured grant applicable in the current serving cell); [0158]). Regarding claim 25, the combination of Rao and Fischer, particularly Rao discloses wherein the PRS reconfiguration request comprises an indication of a required positioning accuracy (different types of measurement reports that may be sent by the WTRU may be associated with different positioning accuracies; [0372]). Regarding claim 26, the combination of Rao and Fischer, particularly Rao discloses wherein the PRS reconfiguration request comprises an indication of a required quality of service, of a service that uses the WTRU position (the WTRU may receive one or more positioning configurations (e.g., assistance information, positioning reporting configuration) containing an update to the QoS requirements associated with positioning, including positioning accuracy and/or latency, based on the information sent by the WTRU to the network about its RRC state; [0374]. The accuracy and/or latency requirements may be related to the positioning QoS indicated by higher layers/application (e.g., LCS client) associated with the WTRU; [0514]). Regarding claim 27, the combination of Rao and Fischer, particularly Rao discloses wherein the PRS reconfiguration request comprises an indication of a required latency of the WTRU position calculation (the WTRU may receive one or more positioning configurations (e.g., assistance information, positioning reporting configuration) containing an update to the QoS requirements associated with positioning, including positioning accuracy and/or latency, based on the information sent by the WTRU to the network about its RRC state; [0374]. The accuracy and/or latency requirements may be related to the positioning QoS indicated by higher layers/application (e.g., LCS client) associated with the WTRU; [0514]). Regarding claim 28, the combination of Rao and Fischer, particularly Rao discloses wherein the PRS reconfiguration request comprises an indication of signal measurements and/or a position estimate of the WTRU (the WTRU may send an indication to the network requesting PRS/SRSp (re)configuration. In addition to the request for PRS/SRSp, the WTRU may also transmit SRSp and other messages including measurement reports (e.g., for WTRU assisted positioning); [0192]). Regarding claim 29, the combination of Rao and Fischer, particularly Rao discloses wherein the PRS reconfiguration request comprises an indication of a capability of the WTRU (the request for positioning information (i.e., LCS request) may be sent to the network, either in a control plane NAS message (e.g., sent via AMF to LMF) or a user plane message (e.g., sent via UPF to LMF). In addition to the LCS request, the WTRU in RRC inactive/idle mode may also send one or more of the following to the network: [0436] WTRU capability information for positioning [0437] For example, the WTRU may send the capability to support one or more positioning methods and/or configurations; [0435-0436]). Regarding claim 31, the combination of Rao and Fischer, particularly Rao discloses wherein the second PRS configuration comprises an indication of a period of time in which the second PRS configuration is to be used (positioning validity tag may contain one or more of the following information/conditions: Time validity: For example, a time duration may be associated with individual PRS and/or SRSp (pre)configurations in the WTRU; [0205-0206]). Regarding claim 32, the claim is interpreted and rejected for the reasons cited in claim 21. Regarding claim 34, the claim is interpreted and rejected for the reasons cited in claim 23. Regarding claim 35, the claim is interpreted and rejected for the reasons cited in claim 24. Regarding claim 36, the claim is interpreted and rejected for the reasons cited in claim 25. Regarding claim 37, the claim is interpreted and rejected for the reasons cited in claim 26. Regarding claim 38, the claim is interpreted and rejected for the reasons cited in claim 27. Regarding claim 39, the claim is interpreted and rejected for the reasons cited in claim 28. Regarding claim 40, the claim is interpreted and rejected for the reasons cited in claim 29. Regarding claim 41, the combination of Rao and Fischer, particularly Fischer discloses wherein the second PRS configuration is an emergency service PRS configuration (the increased quantity of location-related information may be an increase pre-configured in each wireless node (and not conveyed in detail) for the various resources allocated for broadcasting location-related information (e.g., increased bandwidth allocated to transmitting PRS signals, increased frequency or duration of PRS positioning occasions, and/or a transmission of PRS using an uplink carrier frequency). With such pre-configuration, the first request at block 610 and/or any second request sent to a third wireless node may request an increased quantity of location-related information but may not specify the exact increase, since this may be pre-configured in each wireless node. the increased quantity of location-related information broadcast at block 620 and/or indicated in a second request sent to a third wireless node may be higher when a greater number of UEs have requested the increased quantity of location-related information and/or when the requests received from some UEs have higher priority (e.g. such as a request from a UE with an emergency call); [0101]). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to add the features taught by Fischer into the system of Rao in order to reduce the amount of resource usage by a network and/or a mobile device to achieve a preferred level of location support (Fischer; [0002]). Regarding claim 42, the claim is interpreted and rejected for the reasons cited in claim 41. Claim(s) 30 is/are rejected under 35 U.S.C. 103 as being unpatentable over Rao et al. (US 20230379860) in view of Fischer et al. (US 20190037338), and in view of Edge et al. (US 20200137715). Regarding claim 30, the combination of Rao and Fischer does not expressly disclose wherein the first PRS configuration and the second PRS configuration are sent using New Radio Positioning Protocol A (NRPPa). In an analogous art, Edge discloses wherein the first PRS configuration and the second PRS configuration are sent using New Radio Positioning Protocol A (NRPPa) (Information provided by the gNBs 110 and/or ng-eNB 114 to the LMF 120 using NRPPa may include timing and configuration information for PRS transmission and location coordinates. The LMF 120 can then provide some or all of this information to the UE 102 as assistance data in an LPP and/or NPP message via the NG-RAN 135 and the 5GC 140; [0064]). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to add the features taught by Edge into the system of Rao and Fischer in order to improve the support of different position methods to better enable synergies and other means of reducing the cost and complexity of implementation (Edge; [0004]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Priyanto et al. (US 20210329417), “ON DEMAND POSITIONING IN A WIRELESS COMMUNICATION SYSTEM.” Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 OUSSAMA ROUDANI whose telephone number is (571)272-4727. The examiner can normally be reached 8:30 AM - 5:00 PM. 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, UN C CHO can be reached at (571) 272 7919. 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. /OUSSAMA ROUDANI/ Primary Examiner, Art Unit 2413
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Prosecution Timeline

Sep 26, 2023
Application Filed
Sep 11, 2025
Non-Final Rejection — §103
Dec 10, 2025
Applicant Interview (Telephonic)
Dec 10, 2025
Examiner Interview Summary
Dec 11, 2025
Response Filed
Feb 23, 2026
Final Rejection — §103 (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

3-4
Expected OA Rounds
79%
Grant Probability
88%
With Interview (+8.2%)
3y 0m
Median Time to Grant
Moderate
PTA Risk
Based on 465 resolved cases by this examiner. Grant probability derived from career allow rate.

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