Pieris Pharmaceuticals, Inc. Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue - Potential Milestone Payments Received (Details) - Collaborative Arrangement [Member] $ in Millions	Sep. 30, 2023 USD ($)
Research And Development Milestone Payments [Member]
milestone	$ 947
Research And Development Milestone Payments [Member] \| Seattle Genetics Inc. [Member]
milestone	759
Research And Development Milestone Payments [Member] \| Servier Developed Collaboration Products [Member]
milestone	103
Research And Development Milestone Payments [Member] \| Boston Pharmaceuticals [Member]
milestone	85
Sales Milestone Payments [Member]
milestone	810
Sales Milestone Payments [Member] \| Seattle Genetics Inc. [Member]
milestone	450
Sales Milestone Payments [Member] \| Servier Developed Collaboration Products [Member]
milestone	95
Sales Milestone Payments [Member] \| Boston Pharmaceuticals [Member]
milestone	$ 265