Prosecution Insights
Last updated: April 19, 2026
Application No. 18/271,761

METHOD AND APPARATUS FOR HANDLING FALLBACK OF DATA TRANSMISSION

Non-Final OA §103
Filed
Jul 11, 2023
Examiner
DEAN, JR, JOSEPH E
Art Unit
2647
Tech Center
2600 — Communications
Assignee
Lenovo (Beijing) Limited
OA Round
3 (Non-Final)
87%
Grant Probability
Favorable
3-4
OA Rounds
2y 6m
To Grant
96%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allow Rate
653 granted / 750 resolved
+25.1% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
23 currently pending
Career history
773
Total Applications
across all art units

Statute-Specific Performance

§101
5.1%
-34.9% vs TC avg
§103
44.6%
+4.6% vs TC avg
§102
28.8%
-11.2% vs TC avg
§112
8.2%
-31.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 750 resolved cases

Office Action

§103
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 . Applicant amended claims 1 and 15. Applicant cancelled claims 5, 6, 8, 9, 11-14 prior to the first office action. Status of claims: Claims 1-4, 7, 10 and 15-28 are pending in this office 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 12/18/25 has been entered. Claim Rejections - 35 USC § 103 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 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 9. Claim(s) 1-4, 7, 10 and 15-26 is/are rejected under 35 U.S.C. 103 as being unpatentable over 3GPP TSG-RAN WG2 Meeting #112 Electronic R2-2009350 (hereinafter D1 in view of Shih et al. (US20220022276) (hereinafter Shih, [also refer to provisional application 63/052,195]). Per claim 1, D1 discloses a method performed by a user equipment (UE), comprising: detecting a trigger condition relating to a wireless network characteristic, while the UE is in a non-connected radio resource (RRC) state with a network device (page 2, 2.1.1 Timing alignment validity, line 11-page 3, line 2, "If the condition to use the pre-configured PUSCH resources is to have a valid Timing Alignment then it is necessary that the UE has a mechanism available, while in RRC Inactive, that allows it to keep track if the Timing Alignment is still valid. In preconfigured uplink resources[ PUR], this is based on the monitoring of the cell RSRP level; while an alternative/additional approach could be to have this mechanism to be timer based as in RRC CONNECTED state, which would require the introduction of a timeAlignmentTimer (or equivalent timer) to be available for the UE that transitions to RRC_INACTIVE state."); and controlling a data transmission according to the detection of the trigger condition(page 3, lines 3-5, "In PUR, when pur TimeAlignmentTimer is running and RSRP has not changed more than increase Thresh/decreaseThresh TA is considered as valid [3]. It seems the approach used for PUR can be used as baseline for the NR SDT") but fails to explicitly disclose by performing a fallback to a random access channel (RACH) based small data transmission (SDT) in response to the fallback to the RACH based SDT to be initiated by the UE, performing a RACH procedure in response to the fallback to the RACH based SDT not to be initiated by the UE. In an analogous field of endeavor, Shih discloses by performing a fallback to a random access channel (RACH) based small data transmission (SDT) in response to the fallback to the RACH based SDT to be initiated by the UE (paragraph 0426, i.e. the UE may receive, from the gNB, a transmission 1712 comprising an RRC message (e.g., an RRCResume message) and/or DL data. For example, the SDT procedure may fallback to RRCResume, such as based on there being data (e.g., more data) expected to be transmitted, and/or the UE may enter 1710 RRC_CONNECTED state), performing a RACH procedure in response to the fallback to the RACH based SDT not to be initiated by the UE( paragraph 0307, table 0003, i.e. In this release of specification, redirectedCarrierInfo is not included in an RRCRelease message with suspendConfig if this message is in response to an RRCResumeRequest or an RRCResumeRequest1 which is triggered by the NAS layer. voiceFallbackIndication Indicates the RRC release is triggered by EPS fallback for IMS voice as specified in TS 23.502 [43].). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have incorporated the teachings of Xiong into the invention D1, where D1 provides One of the objectives of the item on NR small data transmissions in inactive state is to specify mechanisms that enable the transmission of small data transmissions over pre-configured PUSCH resources and Shih provides a method and apparatus for selecting Bandwidth part (BWP) for subsequent transmission in pre-configured resources based Small Data Transmission (SDT) in a wireless communication system in order to provide efficiency while transmission of large data to and from mobile devices which include fallback when set conditions aren’t met or when additional data is expected, see Shih, paragraphs 0002, 0003, 0307 and 0426 and table 0003. Per claim 2, the combination of D1 and Shih discloses the method of Claim 1, wherein D1 discloses the trigger condition relating to the wireless network characteristic includes reduction in received beam quality or availability of at least one pre-configured uplink resource (page 3,5.3.3.19 Timingalignment validation for transmission using PUR, lines 6-13; page 3, lines 16-21; page 4, Observation 1, Proposal 3, i.e. Observation 1: The condition of a valid timing alignment is not sufficient condition to prevent gNB Rx beam misalignment in all scenarios. Proposal 3: Beam validation is considered on top of TA validation to decide if a CG occasion can be used for SDT). Per claim 3, refer to the same rationale as explained in claim 2, where examiner interprets that D1 discloses via timing alignment validation where you're considering if conditions are met, see page 3 5.3.3.19, 6-13 and 16-21, where the UE possibly lost the timing alignment, where stopping , suspending, starting or resuming data transmission would be apart the process of determining timing alignment validation, as well as determining if there's beam misalignment, page 4, observation 1 and proposal 3). Per claim 4, the combination of D1 and Shih discloses the method of Claim 3, further D1 discloses comprising: transmitting a radio resource control (RRC) message to the network device, wherein the RRC message includes an RRC cause indicating a cause of the control of the data transmission (page 2, Fig 1, ref. 1 RRC resume request., where resume is a cause). Per claim 7, the combination of D1 and Shih discloses the method of Claim 4, wherein D1 discloses an access category is mapped to the RRC cause indicating the cause of the control of the data transmission (page 2, Fig 1, ref. 1 RRC resume request., where resume is the cause and 2.1 and 2.1.1, i.e. In the WID, it is highlighted that the transmission of UL data over pre-configured PUSCH resources has the caveat that the UE must have a valid timing alignment, which is in-line with the PUR design [2]. A UE in RRC_CONNECTED state, is configured by the RRC with timeAlignmentTimer that controls for how long the MAC entity considers the Serving Cells associated with the Timing Advance Group to be uplink time aligned, where examiner interprets that access category relates to a resume cause, In the Applicant's specification, where the term access category has the same function as access identity, where they are both mapped to the resume cause, examiner is not sure what is the difference between access identity and access category). Per claim 10, the combination of D1 and Shih discloses the method of Claim 4, wherein D1 discloses an access identity is mapped to the RRC cause indicating the cause of the control of the data transmission( page 2, Fig 1, ref. 1 RRC resume request., where resume is the cause and 2.1 and 2.1.1, i.e. In the WID, it is highlighted that the transmission of UL data over pre-configured PUSCH resources has the caveat that the UE must have a valid timing alignment, which is in-line with the PUR design [2]. A UE in RRC_CONNECTED state, is configured by the RRC with timeAlignmentTimer that controls for how long the MAC entity considers the Serving Cells associated with the Timing Advance Group to be uplink time aligned, where examiner interprets that access identity relates to a resume cause, In the Applicant's specification, where the term access identity has the same function as access category where they are both mapped to the resume cause, examiner is not sure what is the difference between access identity and access category). Per claim 15, refer to the same rationale as explained in claim 1. Per claim 16, refer to the same rationale as explained in claim 2. Per claim 17, refer to the same rationale as explained in claim 3. Per claim 18, refer to the same rationale as explained in claim 4. Per claim 19, the combination of D1 and Shih discloses the apparatus of Claim 18, wherein D1 discloses the RRC cause indicates that: the fallback to the RACH based SDT is performed according to that a beam quality is less than a threshold or the at least one pre-configured uplink resource is not available; the RACH procedure is performed according to that the beam quality is less than the threshold (page 3, 5.3.3. 19, i.e. A UE shall consider the timing alignment value for transmission using PUR to be valid when all of the following conditions are fulfilled: 1>if pur-TimeAlignmentTimer 1s configured:2> pur-TimeAlignmentTimer is running as confirmed by lower layers;1> if pur-RSRP-ChangeThreshold (pur-NRSRP-Change Threshold in NB-IoT) 1s configured: 2> since the last TA validation, the serving cell(N)RSRP has not increased by more than increaseThresh, and 2> since the last TA validation, the serving cell (N)RSRP has not decreased by more than decrease Thresh, where Proposal 1: the PUR criteria(s}) of RSRP and TA timer to track if the UE's current Timing Alignment is valid is taken as baseline for CG based SDT, also see page 2, Fig 1 RRC resume request, examiner interprets a resume cause or the at least one pre-configured uplink resource is not available; or the beam quality is less than the threshold or the at least one pre- configured uplink resource is not available. Per claim 20, refer to the same rationale as explained in claim 4. Per claim 21, refer to the same rationale as explained in claim 7. Per claim 22, the combination of D1 and Shih discloses the apparatus of Claim 21, wherein D1 discloses the RRC cause includes a resume cause value, and the access category mapped to the resume cause value indicates that: an access attempt for the fallback to the RACH based SDT is performed according to that a beam quality is less than a threshold; the access attempt for the RACH procedure is performed according to that the beam quality is less than the threshold (similar to claim 19 and 7); or the access attempt is performed according to that the beam quality is less than the threshold. Per claim 23, the combination of D1 and Shih discloses the apparatus of Claim 21, wherein D1 discloses the RRC cause includes an establishment cause value, and the access category mapped to the establishment cause value indicates that an access attempt is performed according to a small data transmission beam failure recovery (page 2, 2.1.1, i.e. The general design principle is that if this timer expires then the MAC entity assumes that the uplink is no longer time aligned, which in turn triggers several configuration release actions which include also the "clear any configured downlink assignments and configured uplink grants". This timer can be started or restarted upon the reception of a TimingAdvance Command MAC CEs or by a Timing Advance Command via a Random Access Response message, where examiner interprets restarting or starting is related to RRC cause and establishment cause is based on timer expiration and the timing Alignment .is not aligned, see page 4, lines 4-6, observation 1, proposal 3, The condition of a valid timing alignment is not sufficient condition to prevent gNB Rx beam misalignment in all scenarios, beam validation is considered on top of TA validation to decide if a CG occasion can be used for SDT. Per claim 24, refer to the same rationale as explained in claim 10. Per claim 25 refer to the same rationale as explained in claim 19. Per claim 26, refer to the same rationale as explained in claim 23. 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. Claim(s) 27 and 28 is/are rejected under 35 U.S.C. 103 as being unpatentable over D1and Shih in further view of (3GPP TSG-WG2 meeting #112 electronic/ R2-2010388) (hereinafter D2).. Per claim 27, the combination of D1 and Shih discloses the apparatus of Claim 17, but both references fail to discloses wherein the processor is configured to cause the apparatus to: obtain data of the data transmission stored in a first buffer used for hybrid automatic repeat request (HARQ) when the fallback to the RACH based SDT is performed; and store the data in a second buffer, wherein the second buffer is used for message-3 of RACH, message-A of RACH, message-3 of RACH based SDT or message-A of RACH based SDT. In an analogous filed of endeavor, D2 discloses wherein the processor is configured to cause the apparatus to: obtain data of the data transmission stored in a first buffer used for hybrid automatic repeat request (HARQ) when the fallback to the RACH based SDT is performed; and store the data in a second buffer, wherein the second buffer is used for message-3 of RACH, message-A of RACH, message-3 of RACH based SDT or message-A of RACH based SDT (page 2, Scheme Switch, 2.3 Switch between SDT and RRC resume, . When buffer size is larger than a threshold configured by network, UE may resume RRC connection and apply UL resource for data and page 3, see lines 1-13, transmission. The buffer size here not only includes the data in L2 buffer, but also the foresee data, for example, periodic data packets. Proposal 6: Consider buffer size as criteria for UE to decide whether to do SDT or not). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have incorporated the teachings of D2 into the invention of D1 and Xiong, D2 provides to analyze the SDT type selection between Configured grant and RACH based scheme, and details of data volume calculation for performing transmission scheme in order to provide efficient quality of service to prevent failure or delays, where determining buffer size is crucial to in switching between CG based SDT or a RACH based SDT transmission. Per claim 28, refer to the same rationale as explained in claim 27( D1 provides Mac entities, see page 2, timing alignment validity and D2 provides switching from buffer 1 to buffer 2, page 3 lines 1-13). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSEPH E DEAN, JR whose telephone number is (571)270-7116. The examiner can normally be reached Mon-Fri 7:30-3:30. 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, Alison Slater can be reached at 571-270-0375. 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. /JOSEPH E DEAN, JR/Primary Examiner, Art Unit 2647
Read full office action

Prosecution Timeline

Jul 11, 2023
Application Filed
Jul 25, 2025
Non-Final Rejection — §103
Aug 19, 2025
Interview Requested
Aug 26, 2025
Applicant Interview (Telephonic)
Aug 27, 2025
Examiner Interview Summary
Sep 23, 2025
Response Filed
Nov 01, 2025
Final Rejection — §103
Dec 18, 2025
Request for Continued Examination
Jan 12, 2026
Response after Non-Final Action
Jan 24, 2026
Non-Final Rejection — §103
Feb 05, 2026
Interview Requested
Feb 18, 2026
Examiner Interview Summary
Feb 18, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12604357
USER EQUIPMENT CONFIGURATION DETERMINATION
2y 5m to grant Granted Apr 14, 2026
Patent 12587597
Alert Ringtone for Urgent Messages
2y 5m to grant Granted Mar 24, 2026
Patent 12588081
CARRIER SPECIFIC APERIODIC GAP FOR CAPABILITY SHARING FOR MUSIM OPERATION FOR DUAL TX/RX DEVICE
2y 5m to grant Granted Mar 24, 2026
Patent 12579547
Identification Of Malicious Activity Based On Analysis Of Travel Path Of A Mobile Device
2y 5m to grant Granted Mar 17, 2026
Patent 12572180
DISPLAY PANEL SUPPORT AND DISPLAY DEVICE INCLUDING THE SAME
2y 5m to grant Granted Mar 10, 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

3-4
Expected OA Rounds
87%
Grant Probability
96%
With Interview (+9.2%)
2y 6m
Median Time to Grant
High
PTA Risk
Based on 750 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