Prosecution Insights
Last updated: April 19, 2026
Application No. 18/797,492

MIMO (MULTIPLE INPUT AND MULTIPLE OUTPUT) ANTENNA

Non-Final OA §103
Filed
Aug 07, 2024
Examiner
LEE, WILSON
Art Unit
2844
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
MediaTek Inc.
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
90%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allow Rate
564 granted / 651 resolved
+18.6% vs TC avg
Minimal +3% lift
Without
With
+3.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
21 currently pending
Career history
672
Total Applications
across all art units

Statute-Specific Performance

§101
20.8%
-19.2% vs TC avg
§103
29.6%
-10.4% vs TC avg
§102
26.0%
-14.0% vs TC avg
§112
12.0%
-28.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 651 resolved cases

Office Action

§103
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 . Claim Rejections – 35 U.S.C. 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) 1-4, 18-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Chiang et al. (2021/0013610). Regarding Claim 1, Chiang et al. (2021/0013610) discloses an antenna (100) comprising: M (e.g. four) radiators (r[1], r[2], r[3], r[4], paragraph [0007], fig. 1b) configured to wirelessly (antenna 100 receives electromagnetic waves, paragraph [0076]) access a set of first signals (“antenna 100 may provide the signals M1+ and M1-…”, or “multi-band differential signals”, paragraph [0076]); and M (e.g. four) feeding elements (four feed terminals, paragraph [0022], fig. 6b or 6c), connected to a processing circuit (transceiver, figs. 6a-c), and configured to access a set of second signals (LB1, LB2, or “low-band signals”, paragraph [0022], figs. 6a-c) corresponding to the set of first signals (M1+, M1-, or multi-band differential signals, paragraph [0076]) between the M feeding elements (four feed terminals, paragraph [0022]) and the processing circuit (transceiver, figs. 6a-c); and M (e.g. four) is a positive integer larger than 3 (i.e. four is larger than three). As discussed above, Chiang essentially discloses the claimed invention but does not graphically illustrate the M feeding element formed between the M radiators. However, according to Figs. 1a-d, 2a, the antenna (100) and its radiators (r[1] to r[4]) are shown the top of the invention, it would have been obvious to one of ordinary skill in the art that all other elements (such as feeding terminal, ground plane, transceiver and other circuitry) would have been formed below the antenna and radiators in order to feed power through ground plane and prevent affecting and disturbing the wireless signal being transmitted/received at the antenna. Regarding Claim 2, Chiang discloses the antenna of claim 1, wherein an mth feeding element (comprised of pillar, 701, pt1) (Fig. 7d) of the M feeding elements (with others such as 702, pt2) comprises: a pillar (annotated below) formed beneath an mth radiator (e.g. r[3]) of the M radiators (r[1] to r[4]), and comprising a first terminal (first terminal of pillar, annotated below) and a second terminal (second terminal of pillar, annotated below), wherein the first terminal of the pillar (first terminal of pillar) is closer to the mth radiator (r[3]) than the second terminal of the pillar (second terminal of pillar, annotated below); at least one bar (Bar 1, annotated below) nonparallel (perpendicular to) to the pillar (pillar, annotated below), each bar comprising a first terminal (First terminal of Bar 1, annotated below) connected to the first terminal of the pillar (First terminal of pillar, annotated below), and a second terminal (Second terminal of Bar 1, annotated below); wherein m is an integer, and 0 < m (e.g. 3) ≤ M (e.g. 4). PNG media_image1.png 581 591 media_image1.png Greyscale Regarding Claim 3, Chiang discloses the antenna of claim 2, wherein the at least one bar comprises two bars forming an angle larger than zero degree (Bar 1 and Bar 2 form a right angle which is larger than zero degree, see annotated above). Regarding Claim 4, Chiang discloses the antenna of claim 3, wherein the angle is a right angle (right angle, see annotated above). Regarding Claim 18, Chiang discloses the antenna of claim 1, further comprising: a plurality of conductive vertical elements (g[1]-g[4], since these elements are ground element they are conductive so that the current can be grounded) forming a cavity (cavity formed by a[1] to [4] and g[1] to g[4]) annotated below); wherein the M radiators (r[1] to r[4] formed below a[1] to a[4] and within g[1] to g[4]) and the M feeding elements (formed at the end tip of the walls of g[1] to g[4]) are formed inside the cavity (annotated below) . PNG media_image2.png 624 575 media_image2.png Greyscale Regarding Claim 19, Chiang discloses the antenna of claim 1, wherein at least one radiator of the M radiators has a slot at a non-edge location (the slot formed below a[2], or a[1], [3], [4]. See below annotated figure), and/or a notch on an edge. Regarding Claim 20, Chiang discloses the antenna of claim 1, wherein at least one radiator (r[3]) of the M (four) radiators comprises: a first part (h[32]); a second part (h[31]); and a third part (the plane portion of the “V” shape portion) formed below the first part (h[32]) and the second part (h[31]) and connected to the first part (h[32]) and the second part (h[31]); wherein the third part is corresponding to a recess (form a recess). PNG media_image3.png 633 593 media_image3.png Greyscale Allowable subject matter Claims 5-17 are 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. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to Examiner Wilson Lee whose telephone number is (571) 272-1824. Proposed amendment and interview agenda can be submitted to Examiner’s direct fax at (571) 273-1824. If attempts to reach the examiner by telephone are unsuccessful, examiner’s supervisor, Alexander Taningco can be reached at (571) 272-8048. Papers related to the application may be submitted by facsimile transmission. Any transmission not to be considered an official response must be clearly marked "DRAFT". The official fax number is (571) 273-8300. Information regarding the status of an application may be obtained from the Patent Center. Status information for published applications may be obtained from Patent Center. For more information about the Patent Center, see https://patentcenter.uspto.gov. Should you have questions on access to the Patent Center, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). /WILSON LEE/ Primary Examiner, Art Unit 2844
Read full office action

Prosecution Timeline

Aug 07, 2024
Application Filed
Jan 10, 2026
Non-Final Rejection — §103 (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
87%
Grant Probability
90%
With Interview (+3.1%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 651 resolved cases by this examiner. Grant probability derived from career allow rate.

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