Python4Fun, Inc.
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.
0
Ending by 2030
Mar 2031
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Dec 2, 2026The maintenance fee for Identifying web pages of the world wide web related to a first file with a more recent publication date (US 9,047,284) comes due Dec 2, 2026. Unpaid by Jun 2, 2027, it lapses early.
- 2 fees due Jan 7 to 14, 2027 · next Jan 7
- 2 fees due Feb 18, 2027
- 1 fee due Mar 22, 2027The maintenance fee for Identifying video files of a video file storage system having relevance to a first file (US 9,141,629) comes due Mar 22, 2027. Unpaid by Sep 22, 2027, it lapses early.
Recent changes
- 2 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,515,972 | Finding Relevant Documents In force · High confidence | In force | High confidence | |
| US 8,606,783 | Identifying video files of a video file storage system having relevance to a first file In force · From the USPTO record | In force | From the USPTO record | |
| US 8,972,390 | Identifying Web Pages Having Relevance to a File Based on Mutual Agreement by the Authors In force · Low confidence | In force | Low confidence | |
| US 9,002,834 | Identifying web pages of the world wide web relevant to a first file using search terms that reproduce its citations In force · From the USPTO record | In force | From the USPTO record | |
| US 9,047,284 | Identifying web pages of the world wide web related to a first file with a more recent publication date In force · From the USPTO record | In force | From the USPTO record | |
| US 9,077,775 | Identifying Social Profiles in a Social Network Having Relevance to a First File In force · High confidence | In force | High confidence | |
| US 9,081,774 | Identifying and ranking web pages of the world wide web based on relationships identified by authors In force · From the USPTO record | In force | From the USPTO record | |
| US 9,110,901 | Identifying web pages of the world wide web having relevance to a first file by comparing responses from its multiple authors In force · From the USPTO record | In force | From the USPTO record | |
| US 9,110,908 | Identification of files of a collaborative file storage system having relevance to a first file In force · From the USPTO record | In force | From the USPTO record | |
| US 9,141,629 | Identifying video files of a video file storage system having relevance to a first file In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 11: 1 patent in force now held by others · 6 lapsed for an unpaid fee. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
1 abandoned · 3 no status recorded