22 patents currently held
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
14 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
13
Ending by 2030
Jan 2027
Next term end
22
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Feb 2029 · High confidence
Also notable
Ends Jul 2031 · High confidence
Also notable
Ends Jun 2028 · High confidence
SLM Lithography: Printing to Below K1=.30 Without Previous Opc Processing
US 7,934,172
The most cited patent in this portfolio, cited by 222 later US patents, top 5% of utility patents granted in 2011 in our data. Protection runs to 2029.
Method And Device Using Rotating Printing Arm To Project Or View Image Across A Workpiece
US 8,442,302
Cited by 58 later US patents, top 10% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031.
Ret for Optical Maskless Lithography
US 7,618,751
Cited by 49 later US patents, top 25% of utility patents granted in 2009 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 2 terms have ended since Aug 17, 2026
What they patent
The 2 largest of its 22 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| SLM Lithography: Printing to Below K1=.30 Without Previous Opc Processing | 1 in force | to Feb 2029 |
| Ret for Optical Maskless Lithography | 1 in force | to Jun 2028 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,411,651 | PSM Alignment Method and Device In force · High confidence | In force | High confidence | |
| US 7,759,620 | Fourier Plane Analysis and Refinement of SLM Calibration In force · High confidence | In force | High confidence | |
| US 7,618,751 | Ret for Optical Maskless Lithography In force · High confidence | In force | High confidence | |
| US 7,705,963 | Pupil Improvement of Incoherent Imaging Systems for Enhanced CD Linearity In force · High confidence | In force | High confidence | |
| US 7,934,172 | SLM Lithography: Printing to Below K1=.30 Without Previous Opc Processing In force · High confidence | In force | High confidence | |
| US 8,077,377 | Spatial Light Modulator with Structured Mirror Surfaces In force · High confidence | In force | High confidence | |
| US 7,923,182 | Multi-Focus Method of Enhanced Three-Dimensional Exposure of Resist In force · High confidence | In force | High confidence | |
| US 8,057,971 | Method of Compensation for Bleaching of Resist During Three-Dimensional Exposure of Resist In force · High confidence | In force | High confidence | |
| US 8,067,134 | Method of Iterative Compensation for Non-Linear Effects in Three-Dimensional Exposure of Resist In force · High confidence | In force | High confidence | |
| US 7,930,653 | Triangulating Design Data and Encoding Design Intent for Microlithographic Printing In force · High confidence | In force | High confidence |
Also on record, not counted in the 22: 1 patent in force now held by others · 59 patents ended · 20 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
2 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed