ExamPat

Woo H Choi

USPTO Patent Examiner·Active 2012 to 2026

Woo H Choi is a USPTO patent examiner who has handled 47 ex parte reexaminations between 2012 and 2026, with 19 currently open. These reexams concentrate in Electrical & Electronic, Physics & Instruments, and Mechanical Engineering. ExamPat indexes the full prosecution record for each of these cases, including office-action grounds, certificate outcomes, and downstream PTAB and federal-circuit decisions.

Filings by year

5
12
1
17
1
18
3
20
5
21
3
22
4
23
7
24
13
25
7
26

Technology mix

Electrical & Electronic26 (53%)
Physics & Instruments18 (37%)
Mechanical Engineering3 (6%)
Life Sciences & Consumer1 (2%)
Mechanical & Manufacturing1 (2%)

Compare against all examiners

Eight side-by-side metrics: case volume, pendency, OAs per reexam, rejection mix, SNQ denial rate, certification rate, and PTAB appeal rate, with a Δ column showing where this examiner runs higher or lower than the corpus.

  • Average and median pendency, both for this examiner and the corpus
  • Rejection basis split (102 / 103 / 112) head-to-head
  • Certification, SNQ denial, and PTAB appeal rates

Certificate outcome distribution

How this examiner's certificates split across the six possible outcomes: all claims confirmed, confirmed with amendment, confirmed with new claims, mixed, or all claims canceled. Includes share comparison to the corpus distribution.

  • Count and share for each of the six outcome buckets
  • Δ vs. corpus distribution in percentage points
  • Useful for setting realistic patent-owner expectations

Event-to-event timing

Median time for this examiner's cases at each prosecution stage — filing to first office action, filing to NIRC, and filing to certificate — with corpus comparison and sample size.

  • Median in months per transition
  • Side-by-side with the corpus median
  • n column showing how many of this examiner's cases completed each transition

Recent reexaminations (showing 25 of 47)

Control #FiledPatentTitlePendencyStatus
90/016,203Apr 21, 20268,593,580PROJECTION-TYPE DISPLAY APPARATUS—Open
90/016,110Apr 1, 202610,349,474LAMP TUBE CAPABLE OF RECTIFYING AND STABILIZING VOLTAGES—Open
90/016,087Mar 24, 20268,183,887HIGH SPEED SIGNALING SYSTEM WITH ADAPTIVE TRANSMIT PRE-EMPHASIS—Open
90/016,009Feb 26, 202610,917,272NON-TRANSITORY COMPUTER-READABLE INFORMATION STORAGE MEDIA FOR VARIABLE HEADER REPETITION IN A WIRELESS OFDM NETWORK—Open
90/015,984Feb 23, 20268,810,458HANDHELD DEVICE WITH TWO ANTENNAS, AND METHOD OF ENHANCING THE ISOLATION BETWEEN THE ANTENNAS—Open
90/015,902Jan 23, 20269,685,351Wire Bond Mold Lock Method and Structure—Open
90/015,860Jan 5, 20269,685,351Wire Bond Mold Lock Method and Structure—Open
90/015,768Dec 10, 20258,562,200LIGHTING MODULE, BACKLIGHT UNIT, AND DISPLAY DEVICE INCLUDING THE SAME—Closed
90/015,746Dec 2, 202510,601,780INTERNET ISOLATION FOR AVOIDING INTERNET SECURITY THREATS—Open
90/015,730Nov 26, 20258,314,572APPARATUS AND METHODOLOGY FOR ENHANCING EFFICIENCY OF A POWER DISTRIBUTION SYSTEM HAVING POWER FACTOR CORRECTION CAPABILITY BY USING A SELF-CALIBRATING CONTROLLER—Open
90/015,638Oct 28, 202510,567,047WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL FOR SIGNALING MULTI-USER PACKET—Open
90/015,596Oct 15, 20259,460,037FLEXIBLE MOBILE DEVICE CONNECTIVITY TO AUTOMOTIVE SYSTEMS WITH USB HUBS—Open
90/015,597Oct 10, 202510,545,899FLEXIBLE MOBILE DEVICE CONNECTIVITY TO AUTOMOTIVE SYSTEMS WITH USB HUBS—Open
90/015,525Sep 19, 202510,613,306LIGHT DISTRIBUTION SYSTEM EMPLOYING PLANAR MICROSTRUCTURED WAVEGUIDE—Closed
90/015,458Aug 18, 20256,944,262DENTAL AND ORTHOPEDIC DENSITOMETRY MODELING SYSTEM AND METHOD—Open
90/015,349Jun 27, 2025RE48,675OPTICAL FIBER INTERCONNECT CABINETS, TERMINATION MODULES AND FIBER CONNECTIVITY MANAGEMENT FOR THE SAME—Open
90/015,348Jun 27, 2025RE44,758OPTICAL FIBER INTERCONNECT CABINETS, TERMINATION MODULES AND FIBER CONNECTIVITY MANAGEMENT FOR THE SAME—Open
90/019,976May 30, 20258,181,042LOW POWER MODE DATA PRESERVATION IN SECURE ICS10 moClosed
90/019,919Apr 18, 20259,930,158VEHICLE IMMERSIVE COMMUNICATION SYSTEM—Open
90/019,848Feb 11, 202511,424,792Coordinated Multipoint Systems11 moClosed
90/019,775Dec 13, 202410,671,949SYSTEM AND METHODS FOR MANAGEMENT OF MOBILE FIELD ASSETS VIA WIRELESS HANDHELD DEVICES9 moClosed
90/019,662Sep 16, 20248,407,722ASYNCHRONOUS MESSAGING USING A NODE SPECIALIZATION ARCHITECTURE IN THE DYNAMIC ROUTING NETWORK7 moClosed
90/019,638Aug 28, 202410,601,780INTERNET ISOLATION FOR AVOIDING INTERNET SECURITY THREATS—Open
90/019,557Jun 28, 20249,577,440INDUCTIVE POWER SOURCE AND CHARGING SYSTEM—Open
90/019,530Jun 4, 20247,052,152LCD BACKLIGHT USING TWO-DIMENSIONAL ARRAY LEDS21 moClosed

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