When the corporate technology brands (i.e. any branded products) are done in logo form, they would follow the parent/child rendition of green and gray text, only in this case the parent would be “ptc” in green. The branded technology would be written in text with ®, TM, or nothing depending on what legal protection was secured for that brand.
In the case of black and white rendition, the “ptc” word will be rendered in bold.
In copy, it will be written similarly but “PTC” will have the ® in the first instance. PTC will not be required in subsequent mentions.