Guidelines for Examination:PART C: CHAPTER V PRIORITY, 2. Determining priority dates, 2.4 Some examples of determining priority dates, 2.4.2 Intermediate publication of another European application:

Guidelines for Examination
PART C
CHAPTER V PRIORITY
2. Determining priority dates
2.4 Some examples of determining priority dates
2.4.2 Intermediate publication of another European application:

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PART C
CHAPTER V PRIORITY
2. Determining priority dates
2.4 Some examples of determining priority dates

2.4.1 Intermediate publication of the contents of the priority application:

2.4.3 Multiple priorities claimed for different inventions in the application with an intermediate...

2.4.2

Intermediate publication of another European application:

P1 is the application from which priority is claimed by EP1, P2 the one from which EP2 claims priority. EP1 and EP2 are filed by different applicants.

1.2.89

1.1.90

1.2.90

1.8.90

1.1.91

filing

publication

filing

EP1

EP2

A + B

EP1 is state of the art under Art. 54(3) if the respective priority claims of P1 and P2 are valid. This does not change if the publication of EP1 takes place after the filing date of EP2. The publication of EP1 is state of the art under Art. 54(2) if the priority claim of P2 is not valid.