The time limit for responding to office actions is something that you should follow very strictly. The time limit is 6 months. You should comply with all the legal requirements and meet all the objections put forward in the First Examination Report (FER) as soon as possible.
However, you can file for extension of 3 months using Form 4. In conclusion, you have a maximum of 9 months time limit for responding to office actions. If you fail to respond to the FER within 9 months of the date of issue, your application will be deemed to have been abandoned. Hence, be wary of the timeline at all times.
Also, do make sure that you check out this free e-book: A Quick Guide to Patents. Basically, it deals with basics of patent procedures.
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