Prosecution Insights
Last updated: April 18, 2026
Application No. 18/270,500

ENHANCED MECHANISM FOR DETECTING FAKE BASE STATION ATTACKS

Non-Final OA §102
Filed
Jun 30, 2023
Examiner
SONG, HOSUK
Art Unit
2435
Tech Center
2400 — Computer Networks
Assignee
Koninklijke Philips N V
OA Round
1 (Non-Final)
95%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
97%
With Interview

Examiner Intelligence

Grants 95% — above average
95%
Career Allow Rate
1440 granted / 1520 resolved
+36.7% vs TC avg
Minimal +3% lift
Without
With
+2.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
24 currently pending
Career history
1544
Total Applications
across all art units

Statute-Specific Performance

§101
15.2%
-24.8% vs TC avg
§103
7.1%
-32.9% vs TC avg
§102
37.0%
-3.0% vs TC avg
§112
13.7%
-26.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1520 resolved cases

Office Action

§102
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 . Status of Claims Claims 1-12,15-22 are pending in this application. Claims 13-14 canceled. Claims 17-22 withdrawn. Information Disclosure Statement The Information Disclosure Statement(s) submitted by applicant on 11/4/2025 and 6/30/2023 have been considered. The submission is in compliance with the provisions of 37 CFR 1.97. Form PTO-1449 signed and attached hereto. 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. (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) 1-2,5,6,8-10,15-16 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Huawei et al(Detection of MitM false base station, 3GPP S3-202943). Claim 1: Huawei disclose a randomizer for randomizing an allocation of at least one communication resource and/or identifier used for communicating with a wireless communication device in (6.X.2 Solution details: Note 1,2: UE initiates the process by sending a RRC message to gNB. Before sending RRC message, UE will be allocated a set of SFN parameter, SFN1(system frame number, subframe number and timeslot) by FBS. Fake UE forwards the RRC message to gNB, similarity, gNB will allocate a set of SFN parameter, SFN2 to fake UE.SFN2 is not equal to SFN1(collision probability is 1/10240, i.e, detectability>99.99% as 1024 possible system frame numbers and 10 subframe numbers to be allocated. Time resource allocation SFNI and SFN2 where fake wireless device is performed randomly). Huawei disclose an attack checking unit for checking if transmissions received from the wireless communication device have used the at least one communication resource and/or identifier allocated by the randomized allocation and for determining a presence of or an attack by a fake wireless device based on a result of the checking in (step 4: gNB compares SFN1 and SFN2 to determine where there is a fake FBS). Claim 2: Huawei disclose randomizer is configured to compute at least one random parameter value in a respective predetermined value range and to allocate a time or frequency resource, in particular, a subsequent frame or a subsequent slot or a subsequent frequency range, for the communication with the wireless communication device based on the computed at least one parameter value in (Note 2). Claim 5: Huawei disclose apparatus is configured to transmit the allocated at least one communication resource and/or identifier in a protected message in (page 2. figure). Claim 6: Huawei disclose the allocated at least one communication resource comprises at least one of a random time domain offset value, a random time domain allocation value and a random frequency domain allocation value to be used for a response by the wireless communication device in (Note 1,2, and page 2 figure). Claim 8: Huawei disclose at least one of the time domain allocation value and the frequency domain allocation value points to a row or column of a look-up table in (page 2 figure). Claim 9: Huawei disclose the attack checking unit is configured to perform the checking operation after a security establishment when the wireless communication device establishes a secure connection with the wireless network or after a handover of the wireless communication device in (page 2 step 2-3). Claim 10: Huawei disclose the randomizer is configured to determine a random seed value to be forwarded to the wireless communication device in a protected manner for assigning a communication resource, in particular a time slot or frequency range, for a response message based on a pseudo-random sequence in (page 2 figure). Claim 15: Huawei disclose randomizing an allocation of at least one communication resource and/or identifier used for communicating with a wireless communication device in (6.X.2 Solution details: Note 1,2: UE initiates the process by sending a RRC message to gNB. Before sending RRC message, UE will be allocated a set of SFN parameter, SFN1(system frame number, subframe number and timeslot) by FBS. Fake UE forwards the RRC message to gNB, similarity, gNB will allocate a set of SFN parameter, SFN2 to fake UE.SFN2 is not equal to SFN1(collision probability is 1/10240, i.e, detectability>99.99% as 1024 possible system frame numbers and 10 subframe numbers to be allocated. Time resource allocation SFNI and SFN2 where fake wireless device is performed randomly). Huawei disclose checking if transmissions received from the wireless communication device have used the communication resources and/or identifiers allocated by the randomized allocation; and determining a presence of or an attack by a fake wireless device based on a result of the checking in (step 4: gNB compares SFN1 and SFN2 to determine where there is a fake FBS). Claim 16: Huawei disclose method is performed at random time instants or time instants following a secret schedule agreed between the wireless communication device and the genuine or real access device in (page 2, steps 2-4 and figure). Allowable Subject Matter Claims 3-4,7,11-12 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. USPTO Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to HOSUK SONG whose telephone number is (571)272-3857. The examiner can normally be reached Mon-Fri: 7:30AM-5:00PM. 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, Amir Mehrmanesh can be reached 571-270-3351. 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. /HOSUK SONG/Primary Examiner, Art Unit 2435
Read full office action

Prosecution Timeline

Jun 30, 2023
Application Filed
Jun 30, 2023
Response after Non-Final Action
Mar 19, 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
95%
Grant Probability
97%
With Interview (+2.7%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 1520 resolved cases by this examiner. Grant probability derived from career allow rate.

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