About us

law firm patent firm


IdeaNav helps inventors protect their ideas and convert them into working prototypes.

Who we are

IdeaNav was formed in 2007 and includes:

Patent Attorneys:
Paulo Lopes (MSc(Mech)Eng, LLB, HDip(Tax)),
Anthony van Zantwijk (BSc(Civ)Eng, LLB, LLM(Tax)),
McLean Sibanda (MSc(Met)Eng, LLB, LLM(Comm)), and
Tian Klynsmith (BEng(Met), LLB)

Trademark Attorney:
Taya Lombard (LLB)

Candidate Attorney:
Melissa Rabie (BSc(Mechatronics)Eng)

Industrial Designer:
Monica Monsanto

and our lovely assistant Lesley Mackell.

The company was spun out of Sibanda & Zantwijk Patent Attorneys (a firm specialising in intellectual property commercialisation).

We are also the South African service provider of the low-cost online international intellectual property filing company Iptica.

law firm

Why us?

  • Most of our patent attorneys used to work at the biggest patent firms – Adams and Adams, Spoor and Fisher.
  • We have successfully prototyped many inventions, which are now in the market.
  • We are the most prolific filers of patents in South Africa.
  • We offer a complete range of intellectual property commercialisation services to clients including Anglo American, De Beers, Sasol, SARS, the SA Reserve Bank.

We will take your idea further than any other South African patent firm.

Our philosophy

IdeaNav makes IP accessible and affordable by developing IP tools and making them freely available.

Our clients choose to use us – for each service offered, we ensure that a corresponding free comprehensive “do it yourself tool” is available.


We offer the most affordable patent and design services, guaranteed without compromising quality.

We have discarded the industry-standard hourly-rate billing model and substituted it with a fixed, transparent pricing policy that inventors can budget on.

Independence and objectivity

To protect our independence and objectivity, IdeaNav refuses to accept or offer referral payments – all referrals are motivated by value to the inventor instead of relationships, reciprocity and “rebates”.

law firm patent firm

law firm patent firm

law firm patent firm

Latest Specials
  • Online SA trademark

    Only $80

    Visit Iptica
  • Save up to 70% on renewal fees

    Save up to 70% on patent renewal fees / annuities by paying them online

    Renew Patent
  • Register a Trademark in South Africa

    Register your Trademark

    only R3,450 + vat!

    Find Out More
  • Patent Pending Number

    Only $99

    Visit Iptica
  • Prototype

    3D CAD drawings, renderings, poster, plastic prototype

    only R15,000!

    Find Out More
  • Online SA design registration

    Only $195

    Visit Iptica
  • Register patent in South Africa

    Fixed price provisional patent

    only R6,950 + vat!

    Find Out More
  • Searches

    Professional Patent Search. Fixed price worldwide online search

    only R3,950!

    Find Out More

Get started with the patent process

Get in touch

Contact us

Intangible Consulting (Pty) Ltd.
9 Kruger St
South Africa

T +27 (0)11 483 1439
T +27 (0)11 483 3128 (alt.)
C +27 (0)83 233 4582
F +27 (0)86 627 0055