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When To Add Multiple Dependent Claims?

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I had the honor of speaking at the NAPP Annual Meeting recently. 

My presentation focused on foreign filing best practices and ways to ensure that your US approach would not undermine your global patent opportunities. One attendee asked a question which I feel would be of interest to our blog subscribers.

A portion of my presentation discussed the strategy of introducing multiple dependent claims at the PCT national stage as a way of reducing excess claim fees in foreign countries.  As you may know, in all countries except the US, multiple dependent claims are counted as only a single claim, and it’s possible to have nested multiple dependencies. Therefore, claims in multiple dependent form can sometimes be a useful tool in reducing claim fees while maintaining the scope of the claims.  

The question that arose was why an applicant would choose to enter claims in multiple dependent form at the 30 or 31 month date rather than including them in the initial priority or PCT application. 

In our experience, a decent proportion of US attorneys don’t even think about multiple dependent claims when drafting the initial application. Often, the client is not sure whether they want to enter the international arena anyway, so their attorneys tend to tailor the application with US filing and prosecution in mind. 

Accordingly, I focused my presentation on the idea of amending claims to include multiple dependencies at national phase entry outside the US.

However, it’s definitely worth considering whether including multiple dependencies when initially filing the PCT application might reduce your client’s costs in the long run. If it’s likely the application will enter the national phase in several countries, it’s easier to start with multiple dependencies because you don’t need to then introduce them to each and every country (often at additional cost) during national phase entry or prosecution.

Even if you need to enter the national phase in the US, the cost of amending once to go back to single dependency form at US national phase entry is most likely outweighed by the savings in time and foreign attorneys’ fees in other countries that can use the multiple dependencies as filed with the PCT.

Of course, before you start taking this approach, you must be sure you understand how multiple dependencies work, including their advantages and disadvantages. In practical terms, sometimes it’s easier to start with a single dependency approach then add in multiple dependencies after the claims are drafted, but sometimes it works better the other way. 

However, sensibly used in the right circumstances, multiple dependencies are a great way of increasing the scope-to-cost ratio.


More 1 April 2010 EPO Rule Changes: Amendments at European Regional Stage Entry

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In view of the high excess claims fees that apply to European applications, it's common for PCT applicants to reduce the number of claims on file at regional phase entry to Europe.

In the past, the EPO has taken a surprisingly (in my view) laissez faire approach to the format of such claim amendments. Simply submitting replacement pages with the regional phase entry documentation was generally sufficient.

It's always been desirable to show the nature and location of any amendments being made at regional phase entry. However, it's about to become compulsory to do this.

If the amendments are just claim deletions (presumably for the purpose of fee reduction) then it's acceptable to provide a marked-up copy showing the deletions and claim renumbering, along with a clean copy of the final version. For the marked-up version, most applicants use some form of "track changes" feature in their word-processing software, such that additions are underlined and deletions struck out.

If the features of certain claims are being combined, it will also be necessary to provide a summary of how the new claims relate to the old claims.

And finally, if subject matter from the description is being newly imported to the claims, it will be necessary to explicitly point out where the new claim language is supported in the detailed description.

A couple of other points to note:

  • The official fee for excess claims in Europe is €200 per claim after the 15th, and €500 per claim after the 50th. It therefore often makes sense to rationalize claims if there are many more than about 15 of them and costs are an issue.

  • It's worth remembering that the EPO allows multiple dependencies, and dependencies aren't counted for the purpose of claim calculations. No matter how many claims a particular claim refers to, it only incurs a single claim fee for the purposes of excess claims calculations.

  • As well as amending claims to reduce official fees, it may also be worth taking the opportunity to take into account the EPO's new approach to multiple claims in each claim category (we'll be posting more about this early next week).

Please feel free to contact us if you need more information about these (or any other) EPO rule changes.



April 1, 2010: Substantial changes to EPO procedures

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As you may know, the EPO generally implements fee and procedural changes on 1 April each year. I like to think of it as their way of making sure everyone has a little fun every April Fools' Day.

This year there are a number of important procedural changes that will apply to PCT applications entering the European regional phase from 1 April 2010.

We will soon provide greater detail about the changes, but in the meantime, important points to note include:

  • A hard time limit on the filing of divisionals will (among other things) bring forward the deadline for divisional filings and remove the ability to file a chain of divisionals from a single parent over an extended time.

  • If the EPO was the International Search Authority (ISA), it will be compulsory for applicants to submit a response addressing the ISR and written opinion.  The deadline for doing this is typically only a few weeks after regional phase entry, so applicants will need to act quickly.

  • There will be some changes to how multiple inventions are handled during examination. In some cases (particularly where there are multiple inventive concepts or independent claims), the order in which claim groups are presented for examination will become more important.

  • Amendments to the claims at regional phase entry will now need to be accompanied by an explanation, including the location of support for any material in the amended claims that came from the specification.

We'll soon be posting in detail about these points, but please let us know if you have any specific questions in the meantime.

 


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