blank Quick help
blank Maintenance news

Misleading Register Alert event notification on 15.04.19

Following a clean-up exercise of event information regarding (previously) revoked patents, that were later reinstated, some existing revocation events ("Despatch of communication that patent is revoked") were duplicated on 15.04.2019.

2019.04.15

More...
blank News flashes

European Patent Register Assistant updated

In order to offer you the best possible learning experience we have launched an updated version of the European Patent Register Assistant online tutorial to include recent changes in the Register.

2019.08.29

More...
blank Related links

Extract from the Register of European Patents

Citations: EP2149104

Cited inSearch
Type:Patent literature
Publication No.:US2007029111  [X]
 (CHEN SHILIN [US]) [X] 1-8,15,16 * paragraphs [0139] , [ 185] , [ 206] , [ 218] , [ 349] , [ 350] * * page 22, line 2, paragraph 352 * * claims 1,2,3,7,8,9,10,11,15 * * figures 9-10 *;
Type:Non-patent literature
Publication information:[L]  - S Chen ET AL, "IADC/SPE 112641 Reexamination of PDC Bit Walk in Directional and Horizontal Wells", (20080306), URL: https://www.onepetro.org/download/conference-paper/SPE-112641-MS?id=conference-paper/SPE-112641-MS, (20150703), XP055199926 [L] 1,5
Cited inInternational search
Type:Patent literature
Publication No.:US2007029111  [X]
 ;
Type:Patent literature
Publication No.:US2007029113  [A]
 ;
Type:Patent literature
Publication No.:US2007032958  [A]
 ;
Type:Patent literature
Publication No.:US2007011895  [A]
 ;
Type:Patent literature
Publication No.:US5794720  [A]
 ;
Type:Patent literature
Publication No.:US6438495  [A]
Cited inby applicant
Type:Patent literature
Publication No.:US2007029111