Prosecution Insights
Last updated: April 19, 2026
Application No. 18/696,782

METHOD AND APPARATUS FOR CHANNEL SEPARATION FOR INTELLIGENT REFLECTING SURFACE (IRS)-BASED TRANSMISSION

Non-Final OA §102
Filed
Mar 28, 2024
Examiner
SORRELL, ERON J
Art Unit
3992
Tech Center
3900
Assignee
InterDigital Patent Holdings, Inc.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
89%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
252 granted / 311 resolved
+21.0% vs TC avg
Moderate +8% lift
Without
With
+7.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
18 currently pending
Career history
329
Total Applications
across all art units

Statute-Specific Performance

§101
3.6%
-36.4% vs TC avg
§103
46.8%
+6.8% vs TC avg
§102
19.8%
-20.2% vs TC avg
§112
16.7%
-23.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 311 resolved cases

Office Action

§102
DETAILED ACTION This is a Non-Final Office Action addressing U.S. Application No. 18/696,782. Based upon a review of the instant application, the actual filing date of the instant application is March 28, 2024. 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 . Status of the Claims The Examiner acknowledges the preliminary amendment filed March 28, 2024. Claims 1-7,10-18,21, and 22 are pending and examined herein; Claims 1,3-7,10-12,14-18,21, and 22 are rejected; Claims 2 and 13 are objected to. Claim Rejections - 35 USC § 102 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. Claim(s) 1,3-7,10-12,14-18,21, and 22 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by WO 2021/221603 to Penna et al. (“Penna”). Referring to claims 1 and 12, Penna teaches a method (see figure 5A), implemented by a wireless transmit/receive unit (WTRU), wherein the WRTU comprises a processor and a transceiver (see item 110 in figure 1 comprising items 120 and 130), wherein the method is for reporting channel state information (CSI) for a direct channel and a reflected channel, the method comprising: receiving configuration information indicating (1) a reference signal (RS) set including at least a first RS and a second RS, and (2) a phase value associated with one of the first RS or the second RS (see Abstract and ¶¶ 18, 88, 91, 94, 97, and 98); receiving the first RS in the RS set (see Abstract and ¶¶ 18, 88, 91, 94, 97, and 98); receiving the second RS in the RS set (see Abstract and ¶¶ 18, 88, 91, 94, 97, and 98); determining first channel state information (CSI) associated with the direct channel and second CSI associated with the reflected channel using one or more measurements of the received first RS, one or more measurements of the second RS, and the indicated phase value (see Abstract and ¶¶ 18, 88, 91, 94, 97, and 98); and reporting information indicating the first CSI and the second CSI (see Abstract and ¶¶ 18, 88, 91, 94, 97, and 98). Referring to claims 3 and 14 Penna teaches the method of claim 1 and the device of claim 12 as shown above, and Penna further teaches the first RS is associated with a first set of reflection parameters of the RIS, and the second RS is associated with a second set of reflection parameters of the RIS, and the second set of reflection parameters are different than the first set of reflection parameters (see ¶¶ 91 and 94, note the IRS can have an initial configuration and then be reconfigured with a subsequent configuration). Referring to claims 4 and 15, Penna teaches the method of claim 1 and device of claim 12 (as shown above), and Penna further teaches wherein the second RS is received after the first RS (see ¶ 110). Referring to claims 5 and 16, Penna teaches The method of claim 1 and device of claim 12 (as shown above), and Penna further teaches determining first channel information using the one or more measurements of the received first RS; and determining second channel information using the one or more measurements of the received second RS, wherein the first CSI and the second CSI are determined using the first channel information, the second channel information, and the indicated phase value (see ¶¶ 91, 94, 97, and 98). Referring to claim 6 and 17, Penna teaches the method of claim 1 and device of claim 12 as shown above, and Penna further teaches the configuration information indicating the RS set includes any of time and/or frequency resources associated with the first RS and the second RS, and/or identifiers of the first RS and the second RS (see ¶¶ 91, 94, 97, and 98). Referring to claims 7 and 18, Penna teaches the method of claim 1 and device of claim 12 (as shown above), and Penna further teaches receiving configuration information indicating any of one or more CSI parameters, and/or a reporting type, wherein the first CSI includes respective first values of the one or more CSI parameters, and the second CSI includes respective second values of the one or more CSI parameters, and/or the reporting of the information indicating the first CSI and the second CSI is based on the reporting type which is any of aperiodic, periodic, or semi-persistent (see ¶¶ 91, 94, 97, and 98). Referring to claims 10 and 21, Penna teaches the method of claim 7 and device of claim 12 (as shown above), and Penna further teaches wherein the one or more CSI parameters include any of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), a layer indicator (LI), a channel resource indicator (CRI), a synchronization signal/physical broadcast channel block resource indicator (SSBRI), a signal to interference and noise ratio (SINR), and/or a reference signal received power (RSRP) (see item 580 in figure 5A). Referring to claims 11 and 22, Penna teaches the method of claim 1 and the device of claim 12 (as shown above), and Penna further teaches the first RS and/or the second RS is any of a channel state information RS (CSI-RS), a synchronization signal block (SSB), a sounding reference signal (SRS), and/or a tracking reference signal (TRS) (See Abstract, note the Examiner considers the positioning reference signal (PRS) to be considered a TRS). Allowable Subject Matter Claims 2 and 13 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 The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The following references are cited to further show the state of the art as it pertains to the applicant’s invention: U.S. Pub. No. 2023/0078537 to Yerramalli et al. teaches a method and system for CSI reporting in a system comprising a RIS and is cited as background information; U.S. Pub. No. 2024/0291537 to Wang et al. teaches a system wherein a UE receives an RS set, prior to receiving the references signals, measuring and reporting the channel state and is provided as background information. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ERON J SORRELL whose telephone number is (571)272-4160. The examiner can normally be reached M-F 9AM-6PM EST. 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, Michael Fuelling can be reached at 571-270-1367. 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. Signed: /ERON J SORRELL/Primary Examiner, Art Unit 3992
Read full office action

Prosecution Timeline

Mar 28, 2024
Application Filed
Mar 08, 2026
Non-Final Rejection — §102 (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
81%
Grant Probability
89%
With Interview (+7.8%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 311 resolved cases by this examiner. Grant probability derived from career allow rate.

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