USA

USPTO:

• USPTO's Patent & Application Search
• Patent Trial and Appeal Board 
• Public Patent Application Information Retrieval
• Assignment Databases
• Sequence listing
• Final Decisions of the PTAB

US FDA:

• Drugs@FDA: FDA Approved Drug Products
• Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations
• Orange Book Publications 
• National Drug Code Directory
• Inactive Ingredient Search for Approved Drug Products
• Dissolution Methods
• Pediatric Drug Development
• Paragraph IV Certifications
• Label Repository
• DailyMed
• Product Specific guidances for generic drug development
• News and Events
• Recent New and Generics approvals
• Novel drug approvals for 2015
• Novel drug approvals for 2016
• Novel drug approvals for 2017
• Novel drug approvals for 2018
• Novel drug approvals for 2019
• Novel drug approvals for 2020
• Novel drug approvals for 2021
• Novel drug approvals for 2022

USA other useful links and databases:

• Regulation updates search (e.g. Citizen Petitions)
• Federal Registry
• Clinical Trial Search