Gabapentin 300 mg paten?

Do you mean the patent status of gabapentin itself, or a patent on a specific 300 mg tablet/formulation? If you can tell me your country, I can be more precise.

In general:
- The basic gabapentin molecule (and the original Neurontin product) is largely off-patent in most major markets, and 300 mg gabapentin tablets are widely available as generics.
- There may still be patents on specific formulations, delivery forms (like extended-release versions), or particular uses in certain jurisdictions. For example, distinct products like gabapentin enacarbil (a prodrug used for different indications) have their own patents.
- Patent status is country-specific and can change, so checking the local patent databases is best.

If you want, I can guide you on how to look this up (Google Patents, USPTO, Espacenet, WIPO PATENTSCOPE) or ask me your country and I’ll tailor the info.