さき発明 はつめい主義 しゅぎじゃなかったです
sakihatsumeishugijanakattadesu

Noun
Desu Copula

The polite, past negative form of 先発明主義

1. Wasn't first-inventorism.; Wasn't a first-inventor advocate.

Past/Perfective
Negative
Polite
Casual Register