Technology area: Transportation, E-Commerce & Mechanical Systems
2 pending office actions • 1 art units • 1 examiners • 0 of 2 (0%) have an AI response strategy ready • 4 patents granted in the last 365 days
National Steel Car Limited has 2 pending office actions within the Transportation, E-Commerce & Mechanical Systems technology area. Both of these actions are assigned to 1 distinct examiner and a distinct art unit. This indicates a level of concentration, as the company's entire active portfolio is being reviewed by the same individual within a specialized group.
LIN, CHENG XI is the busiest examiner for this portfolio, currently managing 2 pending office actions. This accounts for all of the company's total pending office actions. The use of a distinct examiner for the actions suggests that the technical subject matter is related, allowing for a consistent examination process within the distinct art unit.
For practitioners, this concentration means that the outcomes of both pending office actions are dependent on the discretion of a single examiner. The matching number of pending actions and busiest examiner pending actions highlights the lack of examiner diversity in the current portfolio. Because both actions are in the Transportation, E-Commerce & Mechanical Systems area and handled by the busiest examiner, the company faces a singular prosecution environment.
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.
| Bucket | Cases |
|---|---|
| Multi-statute (no §101) | 2 (100%) |
How the docket's pending cases split across USPTO tech-center bands.
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.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| LIN, CHENG XI | 2 | 84.9% | +13.4% |
Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 18912688 | Railroad Well Car Structure | LIN, CHENG XI | — |
| 18643037 | RAILROAD CAR AND FLOOR STRUCTURE THEREFOR | LIN, CHENG XI | — |
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 2 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 18912688 | Railroad Well Car Structure | LIN, CHENG XI | — |
| 18643037 | RAILROAD CAR AND FLOOR STRUCTURE THEREFOR | LIN, CHENG XI | — |
| Art Unit | Apps |
|---|---|
| 3615 | 2 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 18912688 | Railroad Well Car Structure | LIN, CHENG XI | 3615 | §102§103§112Other | Non-Final OA | — | Pending | Oct 11, 2024 |
| 18643037 | RAILROAD CAR AND FLOOR STRUCTURE THEREFOR | LIN, CHENG XI | 3615 | §103§112 | Non-Final OA | — | Pending | Apr 23, 2024 |
IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.
Start Free TrialNational Steel Car Limited has 2 pending office actions as of October 2026, spread across 1 art units and 1 examiners.
Cheng Xi Lin has the most, with 2 of National Steel Car Limited's pending office actions.
Mostly Transportation, E-Commerce & Mechanical Systems (USPTO Tech Center 3600), based on where its pending office actions are examined.
