ExamPat

Catherine Serke Williams

USPTO Patent Examiner·Active 2012 to 2026

Catherine Serke Williams is a USPTO patent examiner who has handled 114 ex parte reexaminations between 2012 and 2026, with 24 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
17
26

Technology mix

Life Sciences & Consumer80 (70%)
Mechanical Engineering10 (9%)
Mechanical & Manufacturing8 (7%)
Physics & Instruments7 (6%)
Construction & Mining6 (5%)
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, from 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

vs. all examiners

Certificate outcome distribution

Event-to-event timing (median)

Recent reexaminations (showing 25 of 114)

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Control #FiledPatentTitlePendencyStatus
90/016,561Sep 3, 202612,399,530WEARABLE COMPUTING DEVICE—Open
90/016,560Sep 2, 202612,399,531WEARABLE COMPUTING DEVICE—Open
90/016,544Aug 24, 202611,445,840DRINK CADDY—Open
90/016,519Aug 10, 202612,429,909WEARABLE COMPUTING DEVICE—Open
90/016,517Aug 10, 202612,393,227WEARABLE COMPUTING DEVICE—Open
90/016,198Jul 24, 202612,415,033REAL TIME DRIP CHAMBER MONITOR—Closed
90/016,428Jun 29, 202612,037,162CONTAINER APPARATUS—Open
90/016,424Jun 27, 20266,402,707METHOD AND SYSTEM FOR REAL TIME INTRA-ORALLY ACQUIRING AND REGISTERING THREE-DIMENSIONAL MEASUREMENTS AND IMAGES OF INTRA-ORAL OBJECTS AND FEATURES—Open
90/016,394Jun 12, 202612,364,846SYSTEMS AND METHODS FOR ARTERIAL ACCESS, DIAGNOSIS, AND THERAPY—Open
90/016,372Jun 3, 202610,010,800WATER TOY—Open
90/016,262May 8, 202611,484,746Foldable Exercise Device—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—Closed
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
90/015,505Sep 8, 202512,303,277DEVICE 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
90/015,503Sep 8, 202512,133,734DEVICE FEATURES AND DESIGN ELEMENTS FOR LONG-TERM ADHESION—Open
90/015,439Aug 8, 20259,192,264FOOD PROCESSOR13 moClosed
90/015,360Jun 30, 202512,201,493STRUCTURE FOR COUPLING TOOTHBRUSH HEAD TO ELECTRIC TOOTHBRUSH HANDLE10 moClosed

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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.