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, 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 29)

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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
90/013,315Aug 6, 20148,470,402METHODS OF DEPOSITING A METAL-CONTAINING DIELECTRIC FILM16 moClosed
90/013,316Aug 6, 20148,668,957METHOD OF FORMING DIELECTRIC FILMS, NEW PRECURSORS AND THEIR USE IN SEMICONDUCTOR MANUFACTURING16 moClosed

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