OPS Throttling-Control Retry-After

This space is made available to users of Open Patent Services (OPS) web-service and now also to users of EPO’s bulk data subscription products such as 14. EPO worldwide bibliographic database (DOCDB), 14.11 EPO worldwide legal status database (INPADOC), 14.12 EP full text data, 14.1 EP bibliographic data (EBD)and more.

Users can ask each other questions, exchange experiences and solutions, post ideas. The moderator will use this space to announce changes or other relevant information.
Post Reply

Posts: 6
Joined: Wed May 24, 2017 2:24 pm

OPS Throttling-Control Retry-After

Post by gsvinger » Fri Apr 16, 2021 12:32 pm

I'm facing problems when trying to load image data from OPS.

For my requestes I got back the follwing responses:

http://ops.epo.org/3.2/rest-services/pu ... ge?Range=1

response.StatusCode: OK / XThrottling: busy (images=green:100, inpadoc=green:45, other=green:1000, retrieval=green:100, search=green:15)

http://ops.epo.org/3.2/rest-services/pu ... ge?Range=2

response.StatusCode: Forbidden / XThrottling: idle (images=black:0, inpadoc=green:60, other=green:1000, retrieval=green:200, search=green:30) / X-Rejection-Reason: ThrottlingControlQuota / Retry-After: 216383

As I could not find any specific documentation about the Retry-After on OPS, does this mean, that I have to wait 216383 seconds to continue the loading?



EPO / OPS Support
Posts: 1149
Joined: Thu Feb 22, 2007 5:32 pm

Re: OPS Throttling-Control Retry-After

Post by EPO / OPS Support » Mon Apr 19, 2021 7:09 pm


I cannot confirm that now because I didn't have a chance to see your log but it looks like you went over your quota, but I don't see if it was daily quota (450 MB/day) or you were over the allowed weekly quota (4,5 GB if you have free of charge).

If you want more exact information then send me your user name to patentdata(at)epo.org and I will have a look at what exactly that was. Its also important to know when exactly did you get that response and what was the error (any of the errors in 400's series??)

Retry After response in Header theoretically gives info on how many seconds you need to wait, but its hard to say the reason for it without error code that came with the request. Still, maybe I can see something in your logs.

Your information in retry after is around 60 hours so it could really be that you exhausted your weekly quota and the system was saying to wait until 0:01 GTM Monday to resume the service.

Vesna for OPS support

Posts: 38
Joined: Tue Feb 27, 2007 10:29 am
Location: Nijmegen, The Netherlands

Re: OPS Throttling-Control Retry-After

Post by gerben » Tue Apr 20, 2021 6:42 am

Gerald / Vesna,

216383 seconds is ~2.5 days, so I guess it is not your daily quota. You submitted friday around noon, noon on friday + 2.5 days is midnight on sunday which, depending on your calendar, would be the start of a new week.
My quess is that it was your weekly quota.


EPO / OPS Support
Posts: 1149
Joined: Thu Feb 22, 2007 5:32 pm

Re: OPS Throttling-Control Retry-After

Post by EPO / OPS Support » Tue Apr 20, 2021 9:23 am

Yes, exactly, that's what I wrote in my reply too :-) Sound like quota was exhausted for that week


Post Reply