Prosecution Insights
Last updated: May 29, 2026

SK Innovation Co. Ltd.

17 pending office actions • 12 art units • 15 examiners • 0 of 17 (0%) have an AI response strategy ready • 40 patents granted in the last 365 days

Portfolio Summary

17
Total Pending OAs
11
Non-Final OAs
4
Final Rejections
2
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 17 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

10
Overdue
1
Due this week
3
Due this month
2
Due in next 60 days
1
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 17 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (10)Due ≤ 7 days (1)Due ≤ 30 days (3)Due ≤ 60 days (2)Due later (1)

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

0
Hard (0%)
17
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only16 (94%)
§102 only1 (6%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

17
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

170 h
Manual time on pending OAs
34 h
Time saved (low, 20%)
59 h
Time saved (mid, 35%)
1.5 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KASS-MULLET, BENJAMIN ELI 2 72.2% -5.0%
AMPONSAH, OSEI K 2 72.0% +33.6%
CEPLUCH, ALYSSA L 1 62.1% +25.4%
COHEN, STEFANIE J 1 75.3% +2.1%
GREGORIO, GUINEVER S 1 72.8% +18.8%
FREEMAN, JOHN D 1 45.9% +7.1%
FROST, ANTHONY J 1 52.3% +19.7%
JACOBSON, SARAH JORDAN 1 58.8% +70.0%
RUFO, LOUIS J 1 54.4% +24.0%
OROZCO, MARIA F 1 60.0% -16.7%

Interview Candidates (7)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 7 ordered by deadline are shown.

App #TitleExaminerDue in
18315505 OPTICAL MULTILAYER STRUCTURE, METHOD OF MANUFACTURING THE SAME, AND WINDOW COVER FILM INCLUDING THE SAME FROST, ANTHONY J 91d overdue
18549348 METHOD FOR RECOVERING LITHIUM PRECURSOR FROM LITHIUM SECONDARY BATTERY GREGORIO, GUINEVER S 19d overdue
17401916 ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME AMPONSAH, OSEI K 17d overdue
18187669 POROUS AMORPHOUS METAL OXIDE-BASED CATALYSTS FOR OXYGEN EVOLUTION REACTION AND WATER SPLITTING SYSTEM USING THE SAME RUFO, LOUIS J 2d overdue
18188533 Anode Active Material for Lithium Secondary Battery and Lithium Secondary Battery Including the Same JACOBSON, SARAH JORDAN 7d
18182381 CATHODE COMPOSITION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY MANUFACTURED USING THE SAME AMPONSAH, OSEI K 22d
18388968 Method and Device for Refining Waste Plastic Pyrolysis Oil CEPLUCH, ALYSSA L 54d

Top Art Units

Art UnitApps
1752 4
1732 2
1751 2
1772 1
1787 1
1782 1
1785 1
1795 1
1729 1
1653 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18388968 Method and Device for Refining Waste Plastic Pyrolysis Oil CEPLUCH, ALYSSA L 1772 §103 Final Rejection 54d Pending Nov 13, 2023
18464894 FLUIDIZED BED REACTOR AND METHOD FOR RECYCLING LITHIUM PRECURSOR USING SAME COHEN, STEFANIE J 1732 §103 Non-Final OA 62d Pending Sep 11, 2023
18549348 METHOD FOR RECOVERING LITHIUM PRECURSOR FROM LITHIUM SECONDARY BATTERY GREGORIO, GUINEVER S 1732 §103 Non-Final OA 19d overdue Pending Sep 07, 2023
18233482 Polyimide Composition, Flexible Smart Window and Method of Fabricating Flexible Smart Window FREEMAN, JOHN D 1787 §103 Non-Final OA 32d overdue Pending Aug 14, 2023
18319486 CATHODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY KASS-MULLET, BENJAMIN ELI 1752 §103 Non-Final OA 36d Pending May 18, 2023
18315505 OPTICAL MULTILAYER STRUCTURE, METHOD OF MANUFACTURING THE SAME, AND WINDOW COVER FILM INCLUDING THE SAME FROST, ANTHONY J 1782 §103 Non-Final OA 91d overdue Pending May 11, 2023
18188533 Anode Active Material for Lithium Secondary Battery and Lithium Secondary Battery Including the Same JACOBSON, SARAH JORDAN 1785 §103 Non-Final OA 7d Pending Mar 23, 2023
18187669 POROUS AMORPHOUS METAL OXIDE-BASED CATALYSTS FOR OXYGEN EVOLUTION REACTION AND WATER SPLITTING SYSTEM USING THE SAME RUFO, LOUIS J 1795 §102 Non-Final OA 2d overdue Pending Mar 22, 2023
18182381 CATHODE COMPOSITION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY MANUFACTURED USING THE SAME AMPONSAH, OSEI K 1752 §103 Final Rejection 22d Pending Mar 13, 2023
18074287 CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME OROZCO, MARIA F 1729 §103 Final Rejection 86d overdue Pending Dec 02, 2022
17879015 Method of Recovering Nitrogen and Sulfur Resources Through Anaerobic Fermentation MOSS, NATALIE M 1653 §103 Non-Final OA 9d Pending Aug 02, 2022
17689734 POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME KASS-MULLET, BENJAMIN ELI 1752 §103 Non-Final OA 12d Pending Mar 08, 2022
17565366 SECONDARY BATTERY MODULE ELLIOTT, QUINTIN DALE 1724 §103 Non-Final OA 28d overdue Pending Dec 29, 2021
17495100 SECONDARY BATTERY GARCIA, BETHANY CLAIRE 1721 §103 Non-Final OA 11d overdue Pending Oct 06, 2021
17401916 ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME AMPONSAH, OSEI K 1752 §103 Final Rejection 17d overdue Pending Aug 13, 2021
17387326 BATTERY PACK RUTISER, CLAIRE A 1751 §103 Non-Final OA 45d overdue Pending Jul 28, 2021
16884207 LITHIUM SECONDARY BATTERY WALLS, CYNTHIA KYUNG SOO 1751 §103 Non-Final OA 10d overdue Pending May 27, 2020

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