Prosecution Insights
Last updated: August 17, 2026
Application No. 18/857,960

METHOD AND APPARATUS FOR INDICATING CHANNEL OCCUPANCY STRUCTURE OVER UNLICENSED SPECTRUM

Non-Final OA §103
Filed
Oct 18, 2024
Priority
Apr 21, 2022 — nonprovisional of PCTCN2022088170
Examiner
OVEISSI, MANSOUR
Art Unit
Tech Center
Assignee
Lenovo (United States) Inc.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
1y 2m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
753 granted / 908 resolved
+22.9% vs TC avg
Moderate +12% lift
Without
With
+11.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
32 currently pending
Career history
943
Total Applications
across all art units

Statute-Specific Performance

§101
5.7%
-34.3% vs TC avg
§103
54.8%
+14.8% vs TC avg
§102
9.0%
-31.0% vs TC avg
§112
22.6%
-17.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 908 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Status of Claims 2. This Office Action is in response to the application filed on 10/18/2024. Claims 1 and through 20 are presently pending and are presented for examination. 3. 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 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. Claim Rejections - 35 USC § 103 4. 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. Claims 1-4, 6, 13-18, and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. (US 2022/0417988 A1) in view of Sun et al. (US 2024/0064713 A1). For claim 1 Wang teaches a user equipment (UE) (Fig. 9 “UE”), comprising: at least one memory (Fig. 9 “UE: memory 904”); and at least one processor coupled with the at least one memory (Fig. 9 “UE: memory 904 including instructions 906 coupled with processor 902”)and configured to cause the UE to: perform a channel access procedure for initiating a channel occupancy time (COT) (Fig. 10 “perform a channel access procedure to acquire one or more channel occupancy times (COTs)”); and transmit a sidelink control information (SCI) format within the COT in response to the channel access procedure being successful, wherein the SCI format comprises structure information of the COT (Fig. 10 “Transmit a COT sharing information (COT-SI) configured to reserve the one or more COTs for a future transmission via the sidelink channel”, paragraph 68 “the SCI-1 405 may include information related to the time-frequency slot/subchannel structure associated with the reserved PSSCH sidelink data transmission(s)”, and paragraph 69 “…the SCI-1 (SCI format) may be repurposed or re-interpreted to better represent the time frequency structure associated with the COT. SCI-1 (SCI format) carrying the COT-SI”). Wang does not explicitly teach structure information of COT. However, Sun teaches sidelink control information (SCI) including a COT structure indicator (COT-SI) indicating whether the COT sharing in the first COT is allowed. Thus, it would have been obvious to a person of ordinary skill in the art before the effective filing date of claimed invention to use the teachings of Sun in the COT-SI reservation of sidelink communication of Wang in order to determine whether COT sharing is allowed. For claim 2 Wang teaches the UE, wherein the structure information of the COT indicates at least one of the following: a first time domain resource reserved for a physical sidelink feedback channel (PSFCH) transmission, a second time domain resource occupied by the UE, a third time domain resource for a gap, a fourth time domain resource shared with a second UE, or a fifth time domain resource for automatic gain control (AGC) (paragraph 66 “time domain resource allocation (TDRA) field in the SCI-1 used for time domain or time location reservation and/or scheduling”, paragraph 55 “PSFCH, physical sidelink feedback control channel (PSFCH), which indicates an acknowledgement (ACK)-negative acknowledgement (NACK) for a previously transmitted PSSCH”, paragraph 88 “the COT-SI generated by the COT-initiating UE to reserve COTs for future use may be transmitted via a gap symbol and/or an automatic gain control (AGC) symbol of the radio frame structure”). For claim 3 Wang teaches the UE, wherein the SCI format is transmitted within the COT according to a period (paragraph 55 “resource reservation period…SCI format”); and wherein the period is configured by a serving base station (BS) or predefined (paragraph 68 “base station schedules the number of COT-reservation”); or For claim 4 Wang teaches the UE of claim 2, wherein the at least one processor is further configured to cause the UE to: transmit a physical sidelink shared channel (PSSCH) on the second time domain resource (paragraph 66 “time domain resource allocation (TDRA) field in the SCI-1 used for time domain or time location reservation and/or scheduling”, paragraph 55 “PSFCH, physical sidelink feedback control channel (PSFCH), which indicates an acknowledgement (ACK)-negative acknowledgement (NACK) for a previously transmitted PSSCH); and receive a PSFCH on the first time domain resource carrying hybrid automatic repeat request acknowledge (HARQ-ACK) feedback corresponding to the PSSCH (paragraph 66 “time domain resource allocation (TDRA) field in the SCI-1 used for time domain or time location reservation and/or scheduling”, paragraph 55 “PSFCH, physical sidelink feedback control channel (PSFCH), which indicates an acknowledgement (ACK)-negative acknowledgement (NACK) for a previously transmitted PSSCH). For claim 6 Wang teaches the UE, wherein the at least one processor is further configured to cause the UE to determine the structure information of the COT based on at least one of: a transmission periodicity of the SCI format (paragraph 55 “SCI format”); or a number of symbols within a gap (paragraph 59 “the number of symbols in a slot may vary depending on the aspects (e.g., design options)”, paragraph 34 “COT-SI may be transmitted via a gap symbol (e.g., gap duration is a design option”). For claim 13 Wang in view of Sun teaches a user equipment (UE), comprising: at least one memory (as discussed in claim 1); and at least one processor coupled with the at least one memory (as discussed in claim 1) and configured to cause the UE to: receive a first sidelink control information (SCI) format, wherein the first SCI format comprises structure information of a channel occupancy time (COT) initiated by a first UE (as discussed in claim 1); and perform a channel access procedure for a sidelink transmission within the COT based on the structure information (as discussed in claim 1). For claim 14 Wang teaches the UE, wherein the structure information of the COT indicates at least one of the following: a first time domain resource reserved for a physical sidelink feedback channel (PSFCH) transmission, a second time domain resource occupied by the first UE, a third time domain resource for a gap, a fourth time domain resource shared with the UE (as discussed in claim 2) or a second UE, or a fifth time domain resource for automatic gain control (AGC) (as discussed in claim 2). For claim 15 Wang in view of Sun teaches a method performed by a user equipment (UE) (as discussed in claim 1), the method comprising: performing a channel access procedure for initiating a channel occupancy time (COT) (as discussed in claim 1); and transmitting a sidelink control information (SCI) format in response to the channel access procedure being successful, wherein the SCI format comprises structure information of the COT (as discussed in claim 1). For claim 16 Wang teaches the method, wherein the structure information of the COT indicates at least one of the following: a first time domain resource reserved for a physical sidelink feedback channel (PSFCH) transmission, a second time domain resource occupied by the UE, a third time domain resource for a gap, a fourth time domain resource shared with a second UE (as discussed in claim 2), or a fifth time domain resource for automatic gain control (AGC) (as discussed in claim 2). For claim 17 Wang teaches the method, wherein the SCI format is transmitted within the COT according to a period (as discussed in claim 3); and wherein the period is configured by a serving base station or predefined (as discussed in claim 3); or For claim 18 Wang teaches the method of claim 17, wherein the method further comprises: transmitting a physical sidelink shared channel (PSSCH) on the second time domain resource (as discussed in claim 4); and receiving a PSFCH on the first time domain resource carrying hybrid automatic repeat request acknowledge (HARQ-ACK) feedback corresponding to the PSSCH (as discussed in claim 4). For claim 20 Wang in view of Sun teaches a method performed by a user equipment (UE) (as discussed in claim 1), the method comprising: receiving a first sidelink control information (SCI) format, wherein the first SCI format comprises structure information of a channel occupancy time (COT) initiated by a first UE (as discussed in claim 1); and performing a channel access procedure for a sidelink transmission within the COT based on the structure information (as discussed in claim 1). 5. Claims 5, 7-12, and 19 are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. (US 2022/0417988 A1) in view of Sun et al. (US 2024/0064713 A1) further in view of Khoshnevisan et al. (US 2021/0037551 A1). For claim 5 Wang in view of Sun does not explicitly teach the UE, wherein the SCI format comprises a COT structure indicator to indicate the structure information of the COT, and the COT structure indicator indicates a slot format combination from a list of slot format combinations or indicates a COT structure from a list of COT structures. However, Khoshnevisan teaches the wireless device may receive COT table (list) configuration information… receive a remaining minimum system information (RMSI) message identifying one or more small sized COT tables (lists) for use in obtaining partial COT structure information… decode COT-SI bits to indicate one or more ordered entries of a first COT table and a second COT table (Khoshnevisan: paragraphs 69-72). Thus, it would have been obvious to a person of ordinary skill in the art before the effective filing date of claimed invention to use the teachings of Khoshnevisan in the combined COT-SI reservation of sidelink communication of Sun and Wang enable a wireless device to decode COT-SI bits wherein the COT-SI bits provide various features such as identifying an index value of COT-SI (Khoshnevisan: paragraphs 69-72). For claim 7 Wang in view of Sun further in view of Khoshnevisan teaches the UE of claim 5, wherein each slot format combination of the list of slot format combinations comprises slot format information for one or more consecutive slots with respect to a reference sub-carrier spacing (SCS) (Wang: paragraph 59 “the number of symbols in a slot may vary depending on the aspects, for example, based on the channel bandwidth, the subcarrier spacing (SCS), and/or the CP mode.”). For claim 8 Wang in view of Sun further in view of Khoshnevisan teaches the UE of claim 7, wherein the slot format information (SFI) for a slot indicates a corresponding symbol state for each symbol of the slot and the corresponding symbol state indicates at least one of the following: occupied by the UE, reserved for a PSFCH transmission, used for a gap, shared with a second UE (Wang: paragraph 55 “PSFCH”), or used for automatic gain control (AGC) (Wang: paraph 88 “the COT-SI generated by the COT-initiating UE to reserve COTs for future use may be transmitted via a gap symbol and/or an automatic gain control (AGC) symbol of the radio frame structure”). For claim 9 Wang in view of Sun further in view of Khoshnevisan teaches the UE of claim 5, wherein each COT structure of the list of COT structures comprises at least one of the following indicators with respect to a reference sub-carrier spacing (SCS) (Wang: paragraph 59 “SCS …a number of consecutive symbols…”, design options): a first indicator indicating a number of consecutive slots occupied by the UE (Wang: paragraph 59 “SCS …a number of consecutive symbols…”, design options); a second indicator indicating a number of symbols used as a gap within the last slot occupied by the UE (design options); a third indicator indicating a number of consecutive slots shared with a second UE (design options); a fourth indicator indicating a number of symbols shared with the second UE within the last slot shared with the second UE (design options); a fifth indicator indicating a number of symbols used as a gap between the end of the symbols shared with the second UE and the beginning of a first PSFCH unit of at least one PSFCH unit (Sun: paragraph 92 “a minimum time gap (e.g., about 1 symbol) for PSFCH”, design options); a sixth indicator indicating a number of PSFCH units of the at least one PSFCH unit after the last symbol shared with the second UE (Sun: paragraph 92 “a minimum time gap (e.g., about 1 symbol) for PSFCH”, design options); or a seventh indicator indicating the number of symbols after the last PSFCH unit of the at least one PSFCH unit (Sun: paragraph 92 “a minimum time gap (e.g., about 1 symbol) for PSFCH”, design options). For claim 10 Wang in view of Sun further in view of Khoshnevisan teaches the UE of claim 5, wherein a number of slots within a maximum channel occupancy time (MCOT) corresponding to the channel access procedure is an integer multiple of number of slots within the indicated slot format combination or indicated COT structure (Sun: paragraph 170 “COT-SI”, paragraph 76 “SCI may include a COT-SI including COT sharing information (e.g., a duration of the COT for sharing) and the indication of whether the first sidelink transmission is from a UE 115 that initiated the COT”, paragraphs 98, and paragraph 121 “COT-SI includes an indicator indicating COT or MCOT duration” and Khoshnevisan: paragraph 83 “SFI indicates maximum COT size (MCOT)”). For claim 11 Wang in view of Sun further in view of Khoshnevisan teaches the UE, wherein the structure information of the COT is structure information of the whole COT(Sun: paragraph 48 “the SCI may include a COT-SI including COT sharing information”, paragraph 134 “UE may obtain information related to a duration of the shared portion from the COT-SI indicator”), and the SCI format indicates a position of a slot where the SCI format is transmitted with reference to a first slot of the COT (Khoshnevisan: paragraph 83 “rather than receiving a COT-SI, the wireless device may receive an explicit SFI for each slot of a COT”); or wherein the structure information of the COT is structure information of a remaining duration of the COT (Sun: paragraph 48 “the SCI may include a COT-SI including COT sharing information”, paragraph 134 “UE may obtain information related to a duration of the shared portion from the COT-SI indicator”); or For claim 12 Wang in view of Sun further in view of Khoshnevisan teaches the or the position is indicated by a remaining duration of the COT (Sun: paragraph 48 “the SCI may include a COT-SI including COT sharing information”, paragraph 134 “UE may obtain information related to a duration of the shared portion from the COT-SI indicator”). For claim 19 Wang in view of Sun further in view of Khoshnevisan teaches the method, wherein the SCI format comprises a COT structure indicator to indicate the structure information of the COT, and the COT structure indicator indicates a slot format combination from a list of slot format combinations or indicates a COT structure from a list of COT structures (as discussed in claim 5). Conclusion 6. Any inquiry concerning this communication or earlier communications from the examiner should be directed to David M OVEISSI whose telephone number is (571)270-3127. The examiner can normally be reached Monday-Friday 8Am-5PM. 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, Jeffrey Rutkowski can be reached at (571) 270-1215. 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. /MANSOUR OVEISSI/Primary Examiner, Art Unit 2415
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Prosecution Timeline

Oct 18, 2024
Application Filed
Jul 29, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
83%
Grant Probability
95%
With Interview (+11.8%)
3y 0m (~1y 2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 908 resolved cases by this examiner. Grant probability derived from career allowance rate.

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