Prosecution Insights
Last updated: August 16, 2026
Application No. 18/853,935

Demodulation Reference Signal in a Communication Network

Non-Final OA §102
Filed
Oct 03, 2024
Priority
Apr 06, 2022 — provisional 63/328,224 +1 more
Examiner
KELLER, MICHAEL A
Art Unit
Tech Center
Assignee
Telefonaktiebolaget LM Ericsson
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
608 granted / 703 resolved
+26.5% vs TC avg
Strong +16% interview lift
Without
With
+15.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
31 currently pending
Career history
725
Total Applications
across all art units

Statute-Specific Performance

§101
10.0%
-30.0% vs TC avg
§103
61.5%
+21.5% vs TC avg
§102
10.4%
-29.6% vs TC avg
§112
7.2%
-32.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 703 resolved cases

Office Action

§102
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This action is in response to the communication filed on 10/3/2024. Claims 33-52 are pending. Examiner Note The examiner is here to serve, to assist, and to help applicant to the very best of his ability. The Primary Patent Examiner position is a position of serving and it is an honor to externally serve the applicant and attorney and to internally serve junior examiners and supervisors. The goal of the examiner is to work with and assist applicant to move cases along as efficiently as possible. Applicant is encouraged to call examiner to schedule an interview if applicant has any questions about this action, wants to discuss any possible paths forward, has proposed amendments to the claims to run by the examiner, or for any other issues that applicant would like to discuss. Examiner can normally be reached at (571) 270-3863 or michael.keller@uspto.gov, Monday-Friday, from about 6 AM - 10 PM EST and if your call is missed examiner will try to return call quickly, thank you. Priority This application claims priority of 63/328,224, filed 4/6/2022. The assignee of record is Telefonaktiebolaget LM Ericsson (publ). The listed inventor(s) is/are: Muruganathan, Siva; Ernström, Per; Nilsson, Andreas; Frenne, Mattias; Zhang, Jianwei. Information Disclosure Statement The information disclosure statement(s) (IDS) submitted on 10/3/2024 is/are in compliance with the provisions of 37 CFR 1.97. Accordingly, the IDS(s) is/are being considered by the examiner. Allowable Subject Matter Claim 34-40, 42-48 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 provided that all other rejections under 35 USC 101/112 (if any) are obviated upon upcoming amendments/arguments without raising new issues that necessitate further consideration/search. Claim Objections Claims 34 & 42, objected to because of the following informalities: The claim recites the term “a certain length”, said term is vague and unclear and leaves doubt as to the meaning of the technical feature to which it refers, thereby rendering the definition of the subject matter of said claims unclear. The meaning of every term used in a claim should be apparent from the prior art or from the specification and drawings at the time the application is filed. Applicants need not confine themselves to the terminology used in the prior art, but are required to make clear and precise the terms that are used to define the invention whereby the metes and bounds of the claimed invention can be ascertained. Please see MPEP 2173.05 section I. The Meaning Of Every Term Should Be Apparent. Please also see 37 CFR 1.75 which requires “a claim particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention.” Appropriate correction is required. 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)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (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) 33, 41, 49-50 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Shin et al. (US 20210045101 A1, published 2/11/2021; hereinafter Shi). For Claim 33, Shi teaches a method performed by a communication device configured for use in a communication network, the method comprising: transmitting signaling indicating that the communication device is capable of demodulating a data channel (Shi ¶ 0293) using a demodulation reference signal scheduled without restricting a number of resource elements, resource blocks, or resource block groups to which the demodulation reference signal is mapped to being a multiple of a length of a frequency-domain orthogonal cover code applied to the demodulation reference signal (Shi ¶ 0150). For Claim(s) 41, 49 & 50, the claim(s) is/are substantially similar to claim 33 and therefore is/are rejected for the same reasoning set forth above. Citation of Pertinent Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure is listed below, thank you: i. US 11917561 B2, Method And Apparatus For Performing Data Transmission Based On Multiple Transmission Time Intervals, For Transmitting Control Information, And For Transmitting Data By Employing Multiple Ports Please see PTO-892 for additional listing of relevant prior art made of record but not relied upon, thank you. Conclusion Any inquiry concerning communications from the examiner should be directed to Michael Keller at (571)270-3863 or michael.keller@uspto.gov. If attempts to reach the examiner are unsuccessful, the examiner’s supervisor, Moo Jeong can be reached on 571-272-9617. 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. /MICHAEL A KELLER/ Primary Patent Examiner, Art Unit 2418
Read full office action

Prosecution Timeline

Oct 03, 2024
Application Filed
Jul 21, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12706721
APPARATUS, SYSTEM, AND METHOD OF WIRELESS COMMUNICATION BASED ON A NETWORK CODING (NC) SCHEME
3y 10m to grant Granted Aug 11, 2026
Patent 12701472
WIRELESS COMMUNICATION METHOD, STATION DEVICE, AND ACCESS POINT DEVICE
2y 7m to grant Granted Aug 04, 2026
Patent 12694289
NEURAL NETWORK OR LAYER CONFIGURATION INDICATOR FOR A CHANNEL STATE INFORMATION SCHEME
3y 6m to grant Granted Jul 28, 2026
Patent 12695698
Packet Processing Method and Network Device
2y 10m to grant Granted Jul 28, 2026
Patent 12688070
SHARED ARITHMETIC LOGIC UNIT FOR OPTIMIZING IN-NETWORK COMPUTING
3y 0m to grant Granted Jul 21, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
86%
Grant Probability
99%
With Interview (+15.9%)
2y 5m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 703 resolved cases by this examiner. Grant probability derived from career allowance 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