Which popular writing instrument underwent a significant brand name standardization in English-speaking markets during the 1950s due to linguistic and trademark considerations?

In the world of language and linguistics, product development and branding often intersect in fascinating ways. Companies frequently rebrand or rename their products to better resonate with consumers, address cultural sensitivities, or expand into new markets. Sometimes, these linguistic transformations reveal interesting stories about cultural perception, language evolution, and global marketing strategy. Test your knowledge about a famous linguistic product rebrand that changed how we refer to a common item in English-speaking countries.

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The 'Biro' became universally marketed as 'ballpoint pen'
The 'stylo' became standardized as 'fountain pen'
The 'Bic Cristal' was rebranded as 'Bic ballpoint'
The 'Ball-Point Porex' was rebranded globally as 'Biro'