ExamPat

Catherine Serke Williams

USPTO Patent Examiner·Active 2012 to 2026

Catherine Serke Williams is a USPTO patent examiner who has handled 104 ex parte reexaminations between 2012 and 2026, with 21 currently open. These reexams concentrate in Life Sciences & Consumer, Mechanical Engineering, and Mechanical & Manufacturing. 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
4
13
3
14
6
15
7
16
8
17
6
18
5
19
2
20
5
21
7
22
12
23
13
24
14
25
7
26

Technology mix

Life Sciences & Consumer77 (74%)
Mechanical Engineering10 (10%)
Mechanical & Manufacturing7 (7%)
Construction & Mining6 (6%)
Physics & Instruments2 (2%)
Electrical & Electronic1 (1%)

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 104)

Control #FiledPatentTitlePendencyStatus
90/016,198Apr 20, 202612,415,033REAL TIME DRIP CHAMBER MONITOR—Open
90/016,145Apr 3, 202610,687,745PHYSIOLOGICAL MONITORING DEVICES, SYSTEMS, AND METHODS—Open
90/016,085Mar 24, 202612,089,714Gel Nail and Producing Method Thereof—Open
90/016,066Mar 19, 20269,999,449DEVICES AND METHODS FOR STABILIZING TISSUE AND IMPLANTS—Open
90/015,982Feb 20, 202611,071,612STRUCTURE FOR COUPLING TOOTHBRUSH HEAD TO ELECTRIC TOOTHBRUSH HANDLE—Open
90/015,909Jan 26, 202611,112,068LED TUBE LAMP—Open
90/015,910Jan 26, 202611,112,068LED TUBE LAMP—Open
90/015,716Nov 25, 202512,285,377BITING MASSAGER—Open
90/015,625Oct 24, 20259,986,781ARTICLE OF FOOTWEAR HAVING A TEXTILE UPPER—Open
90/015,593Oct 9, 202511,925,592PENIS MASSAGER—Open
90/015,503Sep 8, 202512,133,734DEVICE FEATURES AND DESIGN ELEMENTS FOR LONG-TERM ADHESION—Open
90/015,504Sep 8, 202512,274,554DEVICE FEATURES AND DESIGN ELEMENTS FOR LONG-TERM ADHESION—Open
90/015,505Sep 8, 202512,303,277DEVICE FEATURES AND DESIGN ELEMENTS FOR LONG-TERM ADHESION—Open
90/015,439Aug 8, 20259,192,264FOOD PROCESSOR—Open
90/015,360Jun 30, 202512,201,493STRUCTURE FOR COUPLING TOOTHBRUSH HEAD TO ELECTRIC TOOTHBRUSH HANDLE10 moClosed
90/019,996Jun 13, 20259,370,443INTRAOCULAR IMPLANTS AND METHODS AND KITS THEREFOR—Open
90/019,991Jun 6, 202511,389,328INTRAOCULAR IMPLANTS AND METHODS AND KITS THEREFOR—Open
90/019,977May 30, 202510,749,303LAMP DEVICE WITH CHANGEABLE LAMP SOCKET—Open
90/019,925Apr 22, 202512,219,928Smart Cat Teasing Unicycle12 moClosed
90/019,888Mar 27, 202512,178,773MASSAGER13 moClosed
90/019,872Mar 11, 202512,188,481FAN BLADE13 moClosed
90/019,778Dec 13, 202411,298,166INTRAOSSEOUS INTRAMEDULLARY FIXATION ASSEMBLY AND METHOD OF USE—Closed
90/019,757Dec 6, 20249,855,002SYSTEMS AND METHODS FOR PARENTERALLY PROCURING BODILY-FLUID SAMPLES WITH REDUCED CONTAMINATION17 moClosed
90/019,756Dec 6, 202410,052,053SYSTEMS AND METHODS FOR PARENTERALLY PROCURING BODILY-FLUID SAMPLES WITH REDUCED CONTAMINATION—Open
90/019,734Nov 20, 202411,957,634MASSAGE DEVICE10 moClosed

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Get the full reexam analytics

Compare Catherine Serke Williams against the full corpus, see the certificate-outcome split, drill into event timing, filter the case list, and export. Free to sign up.