ExamPat

Ling X Xu

USPTO Patent Examiner·Active 2012 to 2023

Ling X Xu is a USPTO patent examiner who has handled 29 ex parte reexaminations between 2012 and 2023. These reexams concentrate in Chemistry & Materials, Electrical & Electronic, 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

2
12
1
13
4
14
1
15
1
16
4
17
3
18
3
19
3
20
3
21
2
22
2
23

Technology mix

Chemistry & Materials15 (52%)
Electrical & Electronic9 (31%)
Mechanical & Manufacturing2 (7%)
Life Sciences & Consumer1 (3%)
Physics & Instruments1 (3%)
Construction & Mining1 (3%)

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 29)

Control #FiledPatentTitlePendencyStatus
90/019,281Oct 16, 202311,611,071DECOMPOSITION OF SILICON-CONTAINING PRECURSORS ON POROUS SCAFFOLD MATERIALS7 moClosed
90/015,208Mar 8, 202311,239,435IRIDIUM COMPLEX AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME9 moClosed
90/015,150Nov 2, 202210,665,789ORGANIC LIGHT-EMITTING DEVICE14 moClosed
90/014,983Mar 16, 202210,319,916COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE9 moClosed
90/014,868Sep 23, 202111,000,534DEUTERATED DERIVATIVES OF PSILOCYBIN AND USES THEREOF9 moClosed
90/014,805Jul 16, 20219,982,175ABRASIVE ARTICLES AND METHODS FOR FORMING SAME7 moClosed
90/014,791Jul 12, 20219,790,411ABRASIVE ARTICLES AND METHODS FOR FORMING SAME8 moClosed
90/014,551Jul 16, 20206,790,427Process for Producing Chlorine Dioxide10 moClosed
90/014,524Jun 5, 20208,206,987PHOTO-DAMAGE METHOD FOR SORTING PARTICLES10 moClosed
90/014,463Feb 25, 20209,896,621ORGANIC LIGHT-EMITTING DEVICE10 moClosed
90/014,404Nov 4, 201910,056,560Compound for Organic Electronic Element, Organic Electronic Element Using the Same, and an Electronic Device10 moClosed
90/014,405Nov 4, 201910,141,516Compound for Organic Electric Element, Organic Electric Element Comprising the Same and Electronic Device Thereof16 moClosed
90/014,279Mar 30, 201910,041,865CORNEAL TISSUE SAMPLE ASSEMBLIES AND RELATED METHODS OF USE11 moClosed
90/014,204Sep 20, 20187,838,576POLY (PHENYLENE ETHER) RESIN COMPOSITION, PREPREG, AND LAMINATED SHEET10 moClosed
90/014,200Sep 11, 20189,893,293ORGANIC ELECTROLUMINESCENT DEVICE9 moClosed
90/014,161Jul 3, 20187,413,791POLY (PHENYLENE ETHER) RESIN COMPOSITION, PREPREG, AND LAMINATED SHEET13 moClosed
90/014,019Oct 2, 20176,432,586SEPARATOR FOR A HIGH ENERGY RECHARGEABLE LITHIUM BATTERY—Closed
90/020,117Aug 8, 20179,136,480ORGANIC LIGHT-EMITTING DIODE10 moClosed
90/013,977Jun 29, 20179,601,698ORGANIC LIGHT-EMITTING DEVICES12 moClosed
90/013,943Apr 20, 20179,206,646METHODS AND APPARATUS FOR DRILLING WELLS21 moClosed
90/020,099Mar 25, 20169,209,411ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES7 moClosed
90/013,610Oct 19, 20157,198,706Method for Inhibiting Corrosion of Metal13 moClosed
90/013,408Dec 31, 20148,890,126COMPOUND FOR OPTOELECTRONIC DEVICE, ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME, AND DISPLAY INCLUDING THE ORGANIC LIGHT EMITTING DIODE10 moClosed
90/013,316Aug 6, 20148,668,957METHOD OF FORMING DIELECTRIC FILMS, NEW PRECURSORS AND THEIR USE IN SEMICONDUCTOR MANUFACTURING16 moClosed
90/013,315Aug 6, 20148,470,402METHODS OF DEPOSITING A METAL-CONTAINING DIELECTRIC FILM16 moClosed

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